{
  "adi_above_pop_share": {
    "display": "3.3%",
    "estimand": "share of residents living in counties ranked above the highest county used, 2019-2023 tract population",
    "note": "",
    "period": "2019-2023",
    "population": "residents of the 50 states and DC",
    "source": "adi",
    "unit": "percent of residents",
    "value": 3.33096,
    "weights": "2019-2023 tract population"
  },
  "adi_max_used": {
    "display": "84",
    "estimand": "highest county deprivation rank among the counties used",
    "n": 240,
    "nUnit": "counties",
    "note": "",
    "period": "2019-2023 tract population weights",
    "population": "the counties used",
    "source": "adi",
    "unit": "national percentile rank (1 least deprived, 100 most)",
    "value": 84.0475,
    "weights": "2019-2023 tract population"
  },
  "adi_min_used": {
    "display": "3",
    "estimand": "lowest county deprivation rank among the counties used",
    "n": 240,
    "nUnit": "counties",
    "note": "",
    "period": "2019-2023 tract population weights",
    "population": "the counties used",
    "source": "adi",
    "unit": "national percentile rank (1 least deprived, 100 most)",
    "value": 3.1508,
    "weights": "2019-2023 tract population"
  },
  "age_births_share": {
    "display": "23.6%",
    "estimand": "share of births in the counties shown",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the named counties",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 23.5695,
    "weights": "none (full count)"
  },
  "age_cells": {
    "display": "6,525",
    "estimand": "count of cells",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "named counties, five age groups, 2018 to 2022",
    "source": "wonder-lbd",
    "unit": "county-year-age cells",
    "value": 6525,
    "weights": "none (full count)"
  },
  "age_cells_withheld": {
    "display": "4,328",
    "estimand": "count of cells with 1 to 9 infant deaths, which WONDER withholds",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "named counties, five age groups, 2018 to 2022",
    "source": "wonder-lbd",
    "unit": "withheld cells",
    "value": 4328,
    "weights": "none (full count)"
  },
  "age_counties": {
    "display": "14",
    "estimand": "count of counties",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "named counties that publish all five age groups in every year 2018 to 2022",
    "source": "wonder-lbd",
    "unit": "counties",
    "value": 14,
    "weights": "none (full count)"
  },
  "aian_cells": {
    "display": "102",
    "estimand": "count of state-year cells",
    "note": "",
    "period": "infant deaths and live births in 2018 and 2019",
    "population": "American Indian or Alaska Native mothers (single race, any ethnicity) in 50 states and DC",
    "source": "wonder-lbd",
    "unit": "state-year cells",
    "value": 102,
    "weights": "none (full count)"
  },
  "aian_published_share": {
    "display": "65.6%",
    "estimand": "share of births in state-years whose deaths WONDER publishes",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to American Indian or Alaska Native mothers (single race, any ethnicity)",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 65.6082,
    "weights": "none (full counts of births)"
  },
  "aian_withheld_cells": {
    "display": "66",
    "estimand": "count of state-year cells with 1 to 9 infant deaths, which WONDER withholds",
    "note": "",
    "period": "infant deaths and live births in 2018 and 2019",
    "population": "American Indian or Alaska Native mothers (single race, any ethnicity) in 50 states and DC",
    "source": "wonder-lbd",
    "unit": "withheld state-year cells",
    "value": 66,
    "weights": "none (full count)"
  },
  "alt_adi_least": {
    "ci": [
      3.8,
      4.2
    ],
    "ciLevel": 0.95,
    "display": "4.0",
    "estimand": "births-weighted mean of county rates; 95% intervals from a bootstrap over counties",
    "n": 120,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the least deprived tenth of counties ranked by Area Deprivation Index, among the counties with all four rankings",
    "source": "chr",
    "unit": "Infant deaths per 1,000 live births",
    "value": 4.01261,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "alt_adi_most": {
    "ci": [
      8,
      9.4
    ],
    "ciLevel": 0.95,
    "display": "8.7",
    "estimand": "births-weighted mean of county rates; 95% intervals from a bootstrap over counties",
    "n": 121,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the most deprived tenth of counties ranked by Area Deprivation Index, among the counties with all four rankings",
    "source": "chr",
    "unit": "Infant deaths per 1,000 live births",
    "value": 8.67639,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "alt_adi_rho": {
    "display": "+0.95",
    "estimand": "Spearman rank correlation between bin order and bin mean, each bin counted once",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the bins of counties ranked by Area Deprivation Index",
    "source": "chr",
    "unit": "rank correlation",
    "value": 0.951515,
    "weights": "each bin counted once"
  },
  "alt_degree_least": {
    "ci": [
      4.1,
      4.6
    ],
    "ciLevel": 0.95,
    "display": "4.3",
    "estimand": "births-weighted mean of county rates; 95% intervals from a bootstrap over counties",
    "n": 120,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the least deprived tenth of counties ranked by Bachelor's degree share, among the counties with all four rankings",
    "source": "chr",
    "unit": "Infant deaths per 1,000 live births",
    "value": 4.33488,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "alt_degree_most": {
    "ci": [
      7.2,
      8.5
    ],
    "ciLevel": 0.95,
    "display": "7.8",
    "estimand": "births-weighted mean of county rates; 95% intervals from a bootstrap over counties",
    "n": 121,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the most deprived tenth of counties ranked by Bachelor's degree share, among the counties with all four rankings",
    "source": "chr",
    "unit": "Infant deaths per 1,000 live births",
    "value": 7.76128,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "alt_degree_rho": {
    "display": "+0.99",
    "estimand": "Spearman rank correlation between bin order and bin mean, each bin counted once",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the bins of counties ranked by Bachelor's degree share",
    "source": "chr",
    "unit": "rank correlation",
    "value": 0.987879,
    "weights": "each bin counted once"
  },
  "alt_income_least": {
    "ci": [
      3.7,
      4.1
    ],
    "ciLevel": 0.95,
    "display": "3.9",
    "estimand": "births-weighted mean of county rates; 95% intervals from a bootstrap over counties",
    "n": 120,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the least deprived tenth of counties ranked by Median household income, among the counties with all four rankings",
    "source": "chr",
    "unit": "Infant deaths per 1,000 live births",
    "value": 3.90763,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "alt_income_most": {
    "ci": [
      8.5,
      9.4
    ],
    "ciLevel": 0.95,
    "display": "9.0",
    "estimand": "births-weighted mean of county rates; 95% intervals from a bootstrap over counties",
    "n": 121,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the most deprived tenth of counties ranked by Median household income, among the counties with all four rankings",
    "source": "chr",
    "unit": "Infant deaths per 1,000 live births",
    "value": 8.98634,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "alt_income_rho": {
    "display": "+1.00",
    "estimand": "Spearman rank correlation between bin order and bin mean, each bin counted once",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the bins of counties ranked by Median household income",
    "source": "chr",
    "unit": "rank correlation",
    "value": 1,
    "weights": "each bin counted once"
  },
  "alt_n_places": {
    "display": "1,206",
    "estimand": "count of counties in the common sample of the ranking comparison",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "counties with the outcome and all four rankings",
    "source": "chr",
    "unit": "counties",
    "value": 1206,
    "weights": "none (full count)"
  },
  "alt_rho_cut": {
    "display": "0.9",
    "estimand": "threshold between a steady and an uneven gradient",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the rule for changed gradients (docs/RANKING_SWITCH_RULE.md)",
    "source": "chr",
    "unit": "absolute rank correlation",
    "value": 0.9,
    "weights": "none (a fixed rule)"
  },
  "alt_rho_margin": {
    "display": "0.1",
    "estimand": "smallest move in the rank correlation that counts as a change of shape",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the rule for changed gradients (docs/RANKING_SWITCH_RULE.md)",
    "source": "chr",
    "unit": "absolute rank correlation",
    "value": 0.1,
    "weights": "none (a fixed rule)"
  },
  "alt_std_least": {
    "ci": [
      3.8,
      4.2
    ],
    "ciLevel": 0.95,
    "display": "4.0",
    "estimand": "births-weighted mean of county rates; 95% intervals from a bootstrap over counties",
    "n": 120,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the least deprived tenth of counties ranked by Standardized index, among the counties with all four rankings",
    "source": "chr",
    "unit": "Infant deaths per 1,000 live births",
    "value": 4.01472,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "alt_std_most": {
    "ci": [
      6.1,
      8.3
    ],
    "ciLevel": 0.95,
    "display": "7.0",
    "estimand": "births-weighted mean of county rates; 95% intervals from a bootstrap over counties",
    "n": 121,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the most deprived tenth of counties ranked by Standardized index, among the counties with all four rankings",
    "source": "chr",
    "unit": "Infant deaths per 1,000 live births",
    "value": 6.95391,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "alt_std_rho": {
    "display": "+0.92",
    "estimand": "Spearman rank correlation between bin order and bin mean, each bin counted once",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "the bins of counties ranked by Standardized index",
    "source": "chr",
    "unit": "rank correlation",
    "value": 0.915152,
    "weights": "each bin counted once"
  },
  "asian_left_out_share": {
    "display": "6.7%",
    "estimand": "share of births in state-years whose deaths WONDER withholds, which leave both deaths and births",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to Asian or Pacific Islander mothers (single race, any ethnicity) in the United States",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 6.69195,
    "weights": "none (full counts of births)"
  },
  "births_left_out_share": {
    "display": "2.6%",
    "estimand": "share of births in the counties left out because a year is withheld",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the named counties",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 2.64631,
    "weights": "none (full count)"
  },
  "births_share_used": {
    "display": "62.3%",
    "estimand": "share of births in the counties used",
    "n": 18484949,
    "nUnit": "births",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "percent of live births in the United States",
    "value": 62.2595,
    "weights": "none (full count)"
  },
  "births_total": {
    "display": "18.5 million",
    "estimand": "count of live births",
    "n": 18484949,
    "nUnit": "births",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "live births",
    "value": 18484949,
    "weights": "none (full count)"
  },
  "black_left_out_share": {
    "display": "1.0%",
    "estimand": "share of births in state-years whose deaths WONDER withholds, which leave both deaths and births",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to Black mothers (single race, any ethnicity) in the United States",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 0.990779,
    "weights": "none (full counts of births)"
  },
  "black_share_q1": {
    "display": "11.1%",
    "estimand": "share of births to Black mothers (single race, any ethnicity) over all births, in the county-years where WONDER publishes the group's births; a county-year with no published count leaves both the numerator and the denominator",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births in the least deprived quarter of the counties used, by county deprivation rank",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 11.1492,
    "weights": "none (full counts of births)"
  },
  "black_share_q4": {
    "display": "31.1%",
    "estimand": "share of births to Black mothers (single race, any ethnicity) over all births, in the county-years where WONDER publishes the group's births; a county-year with no published count leaves both the numerator and the denominator",
    "note": "Webb County, TX has no published count of births to Black mothers in 2 county-years, so those county-years are left out. Counting them as zero would give 30.7% for this quarter.",
    "period": "2018 and 2019",
    "population": "live births in the most deprived quarter of the counties used, by county deprivation rank",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 31.0658,
    "weights": "none (full counts of births)"
  },
  "bw_black_births_share": {
    "display": "98.0%",
    "estimand": "share of those births in the states shown",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to Black mothers (single race, any ethnicity) in the United States",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 98.0213,
    "weights": "none (full counts of births)"
  },
  "bw_ratio_high": {
    "ci": [
      2.3,
      4.7
    ],
    "ciLevel": 0.95,
    "display": "3.2",
    "estimand": "ratio of crude rates in the state with the largest ratio, log-normal interval on the two death counts",
    "n": 123,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births in Delaware, Black mothers over white mothers (single race, any ethnicity)",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 3.2385,
    "weights": "none (crude rates from counts)"
  },
  "bw_ratio_low": {
    "ci": [
      1.4,
      1.9
    ],
    "ciLevel": 0.95,
    "display": "1.7",
    "estimand": "ratio of crude rates in the state with the smallest ratio, log-normal interval on the two death counts",
    "n": 621,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births in Mississippi, Black mothers over white mothers (single race, any ethnicity)",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 1.65331,
    "weights": "none (crude rates from counts)"
  },
  "bw_ratio_median": {
    "display": "2.1",
    "estimand": "median of the state ratios",
    "n": 36,
    "nUnit": "states",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births in the states shown, Black mothers over white mothers (single race, any ethnicity)",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 2.12746,
    "weights": "none (each state counts once)"
  },
  "bw_states": {
    "display": "36",
    "estimand": "count of states",
    "note": "",
    "period": "infant deaths and live births in 2018 and 2019",
    "population": "states that publish infant deaths for both Black and white mothers in both 2018 and 2019",
    "source": "wonder-lbd",
    "unit": "states",
    "value": 36,
    "weights": "none (full count)"
  },
  "chr_all_corr": {
    "ci": [
      0.71,
      0.8
    ],
    "ciLevel": 0.95,
    "display": "0.76",
    "estimand": "births-weighted correlation of the county rate with county deprivation rank, county-cluster bootstrap interval",
    "n": 1206,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "live births in counties with a County Health Rankings rate",
    "source": "chr",
    "unit": "correlation coefficient",
    "value": 0.758747,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "chr_all_d1": {
    "ci": [
      3.8,
      4.2
    ],
    "ciLevel": 0.95,
    "display": "4.0",
    "estimand": "births-weighted mean of county rates, bootstrap interval over counties",
    "n": 120,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "live births in the least deprived tenth of counties with a County Health Rankings rate",
    "source": "chr",
    "unit": "infant deaths per 1,000 live births",
    "value": 4.00211,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "chr_all_d10": {
    "ci": [
      8.1,
      9.5
    ],
    "ciLevel": 0.95,
    "display": "8.8",
    "estimand": "births-weighted mean of county rates, bootstrap interval over counties",
    "n": 121,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "live births in the most deprived tenth of counties with a County Health Rankings rate",
    "source": "chr",
    "unit": "infant deaths per 1,000 live births",
    "value": 8.76516,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "chr_counties": {
    "display": "1,206",
    "estimand": "count of counties with at least 20 infant deaths in the period",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "counties and county equivalents with a County Health Rankings infant mortality rate and an ADI",
    "source": "chr",
    "unit": "counties",
    "value": 1206,
    "weights": "none (full count)"
  },
  "chr_lbd_corr": {
    "ci": [
      0.974,
      0.985
    ],
    "ciLevel": 0.95,
    "display": "0.980",
    "estimand": "births-weighted correlation between the county rate in WONDER and in County Health Rankings, county-cluster bootstrap interval",
    "n": 240,
    "nUnit": "counties",
    "note": "",
    "period": "WONDER 2018 to 2022 and County Health Rankings 2015 to 2021",
    "population": "live births in the counties of 250,000 residents or more that publish infant deaths in every year 2018 to 2022",
    "source": "chr",
    "unit": "correlation coefficient",
    "value": 0.980374,
    "weights": "WONDER births in each county"
  },
  "counties_above_adi_max": {
    "display": "712",
    "estimand": "count of counties whose rank is above the highest rank among the counties used",
    "n": 3128,
    "nUnit": "counties",
    "note": "",
    "period": "2019-2023 tract population weights",
    "population": "counties and county equivalents in the 50 states and DC with a deprivation rank",
    "source": "adi",
    "unit": "counties",
    "value": 712,
    "weights": "none (full count)"
  },
  "counties_left_out": {
    "display": "21",
    "estimand": "count of counties left out of the county rates",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "named counties with a withheld death count in at least one year 2018 to 2022",
    "source": "wonder-lbd",
    "unit": "counties",
    "value": 21,
    "weights": "none (full count)"
  },
  "counties_named": {
    "display": "261",
    "estimand": "count of counties (two identifiers with no births are left out)",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "counties that WONDER linked birth and infant death names individually and that have births",
    "source": "wonder-lbd",
    "unit": "counties",
    "value": 261,
    "weights": "none (full count)"
  },
  "counties_not_mapped": {
    "display": "1,937",
    "estimand": "count of counties with no County Health Rankings rate",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "counties and county equivalents on the map (50 states and DC)",
    "source": "chr",
    "unit": "counties",
    "value": 1937,
    "weights": "none (full count)"
  },
  "counties_used": {
    "display": "240",
    "estimand": "count of counties",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "named counties with a published death count in every year 2018 to 2022",
    "source": "wonder-lbd",
    "unit": "counties",
    "value": 240,
    "weights": "none (full count)"
  },
  "deaths_total": {
    "display": "102,503",
    "estimand": "count of infant deaths (WONDER weights deaths, so the count can differ from the unweighted number of records by rounding)",
    "note": "",
    "period": "2018 to 2022",
    "population": "infants born in the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "infant deaths",
    "value": 102503,
    "weights": "none (full count)"
  },
  "first_day_share": {
    "ci": [
      40.5,
      44.2
    ],
    "ciLevel": 0.95,
    "display": "42.3%",
    "estimand": "pooled share that are deaths in the first 24 hours, bootstrap interval over counties",
    "n": 14,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "infant deaths in the 14 counties that publish all five age groups",
    "source": "wonder-lbd",
    "unit": "percent of infant deaths",
    "value": 42.347,
    "weights": "infant deaths in each county"
  },
  "imr_2021": {
    "ci": [
      5.36,
      5.51
    ],
    "ciLevel": 0.95,
    "display": "5.44",
    "estimand": "crude rate from the death count, normal interval",
    "n": 19927,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2021",
    "population": "live births in the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 5.43816,
    "weights": "none (crude rate from counts)"
  },
  "imr_adi_corr": {
    "ci": [
      0.73,
      0.86
    ],
    "ciLevel": 0.95,
    "display": "0.80",
    "estimand": "births-weighted correlation of the county rate with county deprivation rank, county-cluster bootstrap interval",
    "n": 240,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the counties of 250,000 residents or more that publish infant deaths in every year 2018 to 2022",
    "source": "wonder-lbd",
    "unit": "correlation coefficient",
    "value": 0.801729,
    "weights": "births in each county"
  },
  "imr_all_1819": {
    "ci": [
      5.6,
      5.7
    ],
    "ciLevel": 0.95,
    "display": "5.6",
    "estimand": "crude rate from the death count, normal interval",
    "n": 42421,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births in the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 5.62669,
    "weights": "none (crude rate from counts)"
  },
  "imr_asian": {
    "ci": [
      3.7,
      4.1
    ],
    "ciLevel": 0.95,
    "display": "3.9",
    "estimand": "crude rate from state counts, normal interval",
    "n": 2051,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to Asian or Pacific Islander mothers (single race, any ethnicity) in the United States, states with a published count",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 3.91117,
    "weights": "none (crude rate from counts)"
  },
  "imr_black": {
    "ci": [
      10.1,
      10.5
    ],
    "ciLevel": 0.95,
    "display": "10.3",
    "estimand": "crude rate from state counts, normal interval",
    "n": 12953,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to Black mothers (single race, any ethnicity) in the United States, states with a published count",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 10.3159,
    "weights": "none (crude rate from counts)"
  },
  "imr_midwest": {
    "ci": [
      5.5,
      6.5
    ],
    "ciLevel": 0.95,
    "display": "6.1",
    "estimand": "pooled crude rate over the region's states (12 states), bootstrap interval over those states",
    "n": 12,
    "nUnit": "states",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the Midwest Census region",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 6.06948,
    "weights": "births in each state"
  },
  "imr_natl": {
    "ci": [
      5.5,
      5.6
    ],
    "ciLevel": 0.95,
    "display": "5.5",
    "estimand": "crude rate from the death count, normal interval",
    "n": 102503,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 5.54521,
    "weights": "none (crude rate from counts)"
  },
  "imr_northeast": {
    "ci": [
      3.9,
      5.2
    ],
    "ciLevel": 0.95,
    "display": "4.5",
    "estimand": "pooled crude rate over the region's states (9 states), bootstrap interval over those states",
    "n": 9,
    "nUnit": "states",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the Northeast Census region",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 4.4634,
    "weights": "births in each state"
  },
  "imr_q1": {
    "ci": [
      3.7,
      4.1
    ],
    "ciLevel": 0.95,
    "display": "3.9",
    "estimand": "births-weighted mean of county rates (the pooled rate), bootstrap interval over counties",
    "n": 60,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the least deprived quarter of the counties used, by county deprivation rank",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 3.89329,
    "weights": "births in each county"
  },
  "imr_q4": {
    "ci": [
      6.7,
      7.6
    ],
    "ciLevel": 0.95,
    "display": "7.2",
    "estimand": "births-weighted mean of county rates (the pooled rate), bootstrap interval over counties",
    "n": 60,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the most deprived quarter of the counties used, by county deprivation rank",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 7.20861,
    "weights": "births in each county"
  },
  "imr_q_diff": {
    "ci": [
      2.8,
      3.8
    ],
    "ciLevel": 0.95,
    "display": "3.3",
    "estimand": "difference of two pooled rates, bootstrap interval over counties with shared draws",
    "n": 240,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the counties used, most deprived quarter minus least deprived quarter",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 3.31532,
    "weights": "births in each county"
  },
  "imr_q_ratio": {
    "ci": [
      1.7,
      2
    ],
    "ciLevel": 0.95,
    "display": "1.9",
    "estimand": "ratio of two pooled rates, bootstrap interval over counties with shared draws",
    "n": 240,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the counties used, most deprived quarter over least deprived quarter",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 1.85155,
    "weights": "births in each county"
  },
  "imr_race_gap": {
    "ci": [
      5.4,
      5.8
    ],
    "ciLevel": 0.95,
    "display": "5.6",
    "estimand": "difference of crude rates, normal interval on the two death counts",
    "n": 39469,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births in the United States, Black mothers minus white mothers (single race, any ethnicity)",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 5.59535,
    "weights": "none (crude rates from counts)"
  },
  "imr_race_ratio": {
    "ci": [
      2.1,
      2.2
    ],
    "ciLevel": 0.95,
    "display": "2.2",
    "estimand": "ratio of crude rates, log-normal interval on the two death counts",
    "n": 39469,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births in the United States, Black mothers over white mothers (single race, any ethnicity)",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 2.18531,
    "weights": "none (crude rates from counts)"
  },
  "imr_rest": {
    "ci": [
      4.6,
      5.7
    ],
    "ciLevel": 0.95,
    "display": "5.1",
    "estimand": "pooled crude rate over the states of the group (34 states), bootstrap interval over those states",
    "n": 34,
    "nUnit": "states",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births outside the Census South region",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 5.05808,
    "weights": "births in each state"
  },
  "imr_slope_1819_per_10": {
    "ci": [
      0.52,
      0.71
    ],
    "ciLevel": 0.95,
    "display": "0.62",
    "estimand": "births-weighted slope of the county rate on county deprivation rank, county-cluster bootstrap interval",
    "n": 240,
    "nUnit": "counties",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births in the counties of 250,000 residents or more that publish infant deaths in every year 2018 to 2022, deaths and births in 2018 and 2019 only",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births for each ten points of county deprivation rank",
    "value": 0.6191,
    "weights": "births in each county"
  },
  "imr_slope_black_per_10": {
    "ci": [
      0.62,
      1.01
    ],
    "ciLevel": 0.95,
    "display": "0.82",
    "estimand": "births-weighted slope of the county rate on county deprivation rank, county-cluster bootstrap interval",
    "n": 115,
    "nUnit": "counties",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to Black mothers (single race, any ethnicity) in the counties used that publish the group in both years",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births for each ten points of county deprivation rank",
    "value": 0.817339,
    "weights": "births in each county"
  },
  "imr_slope_fe_per_10": {
    "ci": [
      0.47,
      0.84
    ],
    "ciLevel": 0.95,
    "display": "0.62",
    "estimand": "births-weighted slope of the county rate on county deprivation rank with state fixed effects, bootstrap interval over states",
    "n": 44,
    "nUnit": "states",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the counties of 250,000 residents or more that publish infant deaths in every year 2018 to 2022",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births for each ten points of county deprivation rank",
    "value": 0.623841,
    "weights": "births in each county"
  },
  "imr_slope_per_10": {
    "ci": [
      0.54,
      0.71
    ],
    "ciLevel": 0.95,
    "display": "0.63",
    "estimand": "births-weighted slope of the county rate on county deprivation rank, county-cluster bootstrap interval",
    "n": 240,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the counties of 250,000 residents or more that publish infant deaths in every year 2018 to 2022",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births for each ten points of county deprivation rank",
    "value": 0.630502,
    "weights": "births in each county"
  },
  "imr_slope_white_per_10": {
    "ci": [
      0.29,
      0.44
    ],
    "ciLevel": 0.95,
    "display": "0.36",
    "estimand": "births-weighted slope of the county rate on county deprivation rank, county-cluster bootstrap interval",
    "n": 203,
    "nUnit": "counties",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to white mothers (single race, any ethnicity) in the counties used that publish the group in both years",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births for each ten points of county deprivation rank",
    "value": 0.36166,
    "weights": "births in each county"
  },
  "imr_south": {
    "ci": [
      5.9,
      6.9
    ],
    "ciLevel": 0.95,
    "display": "6.3",
    "estimand": "pooled crude rate over the states of the group (17 states), bootstrap interval over those states",
    "n": 17,
    "nUnit": "states",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the Census South region (16 states and DC)",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 6.28315,
    "weights": "births in each state"
  },
  "imr_state_high": {
    "ci": [
      8.3,
      9.2
    ],
    "ciLevel": 0.95,
    "display": "8.7",
    "estimand": "crude rate from the death count, normal interval",
    "n": 1564,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in Mississippi",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 8.74036,
    "weights": "none (crude rate from counts)"
  },
  "imr_state_low": {
    "ci": [
      3.5,
      3.9
    ],
    "ciLevel": 0.95,
    "display": "3.7",
    "estimand": "crude rate from the death count, normal interval",
    "n": 1260,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in Massachusetts",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 3.68018,
    "weights": "none (crude rate from counts)"
  },
  "imr_state_low_nh": {
    "ci": [
      3.2,
      4.2
    ],
    "ciLevel": 0.95,
    "display": "3.7",
    "estimand": "crude rate from the death count, normal interval",
    "n": 224,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in New Hampshire",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 3.7131,
    "weights": "none (crude rate from counts)"
  },
  "imr_state_ratio": {
    "ci": [
      2.2,
      2.6
    ],
    "ciLevel": 0.95,
    "display": "2.4",
    "estimand": "ratio of Mississippi's crude rate to Massachusetts's, log-normal interval on the two death counts",
    "n": 2824,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in Mississippi and in Massachusetts",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 2.37498,
    "weights": "none (crude rates from counts)"
  },
  "imr_west": {
    "ci": [
      4.3,
      5.3
    ],
    "ciLevel": 0.95,
    "display": "4.6",
    "estimand": "pooled crude rate over the region's states (13 states), bootstrap interval over those states",
    "n": 13,
    "nUnit": "states",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the West Census region",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 4.56638,
    "weights": "births in each state"
  },
  "imr_white": {
    "ci": [
      4.7,
      4.8
    ],
    "ciLevel": 0.95,
    "display": "4.7",
    "estimand": "crude rate from state counts, normal interval",
    "n": 26516,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to white mothers (single race, any ethnicity) in the United States, states with a published count",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 4.72059,
    "weights": "none (crude rate from counts)"
  },
  "imr_year_high": {
    "ci": [
      5.6,
      5.7
    ],
    "ciLevel": 0.95,
    "display": "5.7",
    "estimand": "crude rate from the death count, normal interval",
    "n": 21496,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018",
    "population": "live births in the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 5.66921,
    "weights": "none (crude rate from counts)"
  },
  "imr_year_low": {
    "ci": [
      5.3,
      5.5
    ],
    "ciLevel": 0.95,
    "display": "5.4",
    "estimand": "crude rate from the death count, normal interval",
    "n": 19576,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2020",
    "population": "live births in the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 5.41724,
    "weights": "none (crude rate from counts)"
  },
  "jurisdictions": {
    "display": "51",
    "estimand": "count of states and DC in the state files",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "the 50 states and the District of Columbia",
    "source": "wonder-lbd",
    "unit": "jurisdictions",
    "value": 51,
    "weights": "none (full count)"
  },
  "lbd_county_threshold": {
    "display": "250,000",
    "estimand": "population size at which WONDER names a county in the linked file (a definition)",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "counties that CDC WONDER linked birth and infant death names individually",
    "source": "wonder-lbd",
    "unit": "residents",
    "value": 250000,
    "weights": "none (definition)"
  },
  "lbd_withheld_cells": {
    "display": "44",
    "estimand": "count of county-years with 1 to 9 infant deaths, which WONDER withholds",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "county-year rows of the named counties",
    "source": "wonder-lbd",
    "unit": "withheld county-years",
    "value": 44,
    "weights": "none (full count)"
  },
  "lbd_withheld_max_share": {
    "display": "0.6%",
    "estimand": "largest share of deaths the withheld county-years could hold: 9 deaths in each withheld county-year, over published deaths plus that limit",
    "note": "",
    "period": "2018 to 2022",
    "population": "infant deaths in the named counties",
    "source": "wonder-lbd",
    "unit": "percent of infant deaths",
    "value": 0.641878,
    "weights": "none (an upper limit from the cell count)"
  },
  "map_floor_deaths": {
    "display": "20",
    "estimand": "fewest infant deaths in the period for which County Health Rankings publishes a county rate, which is also the book's map floor (a definition)",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "counties on the map",
    "source": "chr",
    "unit": "infant deaths",
    "value": 20,
    "weights": "none (definition)"
  },
  "map_key_high": {
    "display": "10.6",
    "estimand": "ninety-fifth percentile of the mapped county rates, the high end of the map key (counties beyond it take the end color)",
    "n": 1206,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "mapped counties",
    "source": "chr",
    "unit": "infant deaths per 1,000 live births",
    "value": 10.5625,
    "weights": "none (each county counts once)"
  },
  "map_key_low": {
    "display": "3.7",
    "estimand": "fifth percentile of the mapped county rates, the low end of the map key (counties beyond it take the end color)",
    "n": 1206,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "mapped counties",
    "source": "chr",
    "unit": "infant deaths per 1,000 live births",
    "value": 3.72027,
    "weights": "none (each county counts once)"
  },
  "map_ms_top": {
    "display": "25",
    "estimand": "count of those counties in Mississippi",
    "n": 121,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "mapped counties in the highest tenth of infant mortality rates",
    "source": "chr",
    "unit": "counties",
    "value": 25,
    "weights": "none (each county counts once)"
  },
  "map_south_all_share": {
    "display": "49.3%",
    "estimand": "share of mapped counties in the Census South region (16 states and DC)",
    "n": 1206,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "all mapped counties",
    "source": "chr",
    "unit": "percent of counties",
    "value": 49.2537,
    "weights": "none (each county counts once)"
  },
  "map_south_top_share": {
    "display": "85.1%",
    "estimand": "share of those counties in the Census South region (16 states and DC)",
    "n": 121,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "mapped counties in the highest tenth of infant mortality rates",
    "source": "chr",
    "unit": "percent of counties",
    "value": 85.124,
    "weights": "none (each county counts once)"
  },
  "neo_rate": {
    "ci": [
      3.1,
      4.1
    ],
    "ciLevel": 0.95,
    "display": "3.6",
    "estimand": "pooled neonatal (under 28 days) death rate, bootstrap interval over counties",
    "n": 14,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the 14 counties that publish all five age groups",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 3.56821,
    "weights": "births in each county"
  },
  "neo_ratio_halves": {
    "ci": [
      1.2,
      1.8
    ],
    "ciLevel": 0.95,
    "display": "1.5",
    "estimand": "ratio of pooled neonatal death rates, bootstrap interval over counties with shared draws",
    "n": 14,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the 14 counties that publish all five age groups, the counties above the median deprivation rank over those below it",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 1.45195,
    "weights": "births in each county"
  },
  "neo_share": {
    "ci": [
      67.4,
      70.2
    ],
    "ciLevel": 0.95,
    "display": "68.7%",
    "estimand": "pooled share that are neonatal deaths (under 28 days), bootstrap interval over counties",
    "n": 14,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "infant deaths in the 14 counties that publish all five age groups",
    "source": "wonder-lbd",
    "unit": "percent of infant deaths",
    "value": 68.6697,
    "weights": "infant deaths in each county"
  },
  "neonatal_cutoff_days": {
    "display": "28",
    "estimand": "age below which an infant death is neonatal; from this age to the first birthday it is postneonatal (a definition)",
    "note": "",
    "period": "all years (a definition)",
    "population": "infants",
    "source": "wonder-lbd",
    "unit": "days of age",
    "value": 28,
    "weights": "none (definition)"
  },
  "per_1000": {
    "display": "1,000",
    "estimand": "the denominator of an infant mortality rate (a definition)",
    "note": "",
    "period": "all years (a definition)",
    "population": "all live births",
    "source": "wonder-lbd",
    "unit": "live births",
    "value": 1000,
    "weights": "none (definition)"
  },
  "post_rate": {
    "ci": [
      1.4,
      1.9
    ],
    "ciLevel": 0.95,
    "display": "1.6",
    "estimand": "pooled postneonatal (28 to 364 days) death rate, bootstrap interval over counties",
    "n": 14,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the 14 counties that publish all five age groups",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 1.62798,
    "weights": "births in each county"
  },
  "post_ratio_halves": {
    "ci": [
      1.3,
      2.1
    ],
    "ciLevel": 0.95,
    "display": "1.6",
    "estimand": "ratio of pooled postneonatal death rates, bootstrap interval over counties with shared draws",
    "n": 14,
    "nUnit": "counties",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the 14 counties that publish all five age groups, the counties above the median deprivation rank over those below it",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 1.63113,
    "weights": "births in each county"
  },
  "race_births_share_black": {
    "display": "82.5%",
    "estimand": "share of those births in counties that publish the group in both years",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to Black mothers in the counties used",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 82.4736,
    "weights": "none (full count)"
  },
  "race_births_share_white": {
    "display": "93.9%",
    "estimand": "share of those births in counties that publish the group in both years",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to white mothers in the counties used",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 93.8705,
    "weights": "none (full count)"
  },
  "race_counties_black": {
    "display": "115",
    "estimand": "count of counties",
    "note": "",
    "period": "infant deaths and live births in 2018 and 2019",
    "population": "counties used that publish Black infant deaths in both 2018 and 2019",
    "source": "wonder-lbd",
    "unit": "counties",
    "value": 115,
    "weights": "none (full count)"
  },
  "race_counties_white": {
    "display": "203",
    "estimand": "count of counties",
    "note": "",
    "period": "infant deaths and live births in 2018 and 2019",
    "population": "counties used that publish white infant deaths in both 2018 and 2019",
    "source": "wonder-lbd",
    "unit": "counties",
    "value": 203,
    "weights": "none (full count)"
  },
  "rank_step": {
    "display": "10",
    "estimand": "the step in the county deprivation rank for which a slope is reported (a definition)",
    "note": "",
    "period": "all years (a definition)",
    "population": "counties",
    "source": "adi",
    "unit": "points of county deprivation rank",
    "value": 10,
    "weights": "none (definition)"
  },
  "south_in_top": {
    "display": "7",
    "estimand": "highest-rate states in the Census South region (16 states and DC)",
    "n": 10,
    "nUnit": "states",
    "note": "",
    "period": "2018 to 2022",
    "population": "the ten states with the highest infant mortality rates",
    "source": "wonder-lbd",
    "unit": "states",
    "value": 7,
    "weights": "none (each state counts once)"
  },
  "south_n": {
    "display": "17",
    "estimand": "jurisdictions in the Census South region (16 states and DC)",
    "note": "",
    "period": "2018 to 2022",
    "population": "the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "jurisdictions",
    "value": 17,
    "weights": "none (full count)"
  },
  "south_rest_ratio": {
    "ci": [
      1.1,
      1.4
    ],
    "ciLevel": 0.95,
    "display": "1.2",
    "estimand": "ratio of pooled crude rates (17 South states over 34 other states), stratified bootstrap interval that resamples the states of each group separately",
    "n": 51,
    "nUnit": "states in the two groups",
    "note": "",
    "period": "2018 to 2022",
    "population": "live births in the 50 states and DC, Census South region over the rest",
    "source": "wonder-lbd",
    "unit": "ratio of rates",
    "value": 1.2422,
    "weights": "births in each state"
  },
  "states_above": {
    "display": "21",
    "estimand": "states whose 95% interval lies above the national rate",
    "n": 51,
    "nUnit": "jurisdictions",
    "note": "",
    "period": "2018 to 2022",
    "population": "the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "states",
    "value": 21,
    "weights": "none (crude rates from counts)"
  },
  "states_below": {
    "display": "16",
    "estimand": "states whose 95% interval lies below the national rate",
    "n": 51,
    "nUnit": "jurisdictions",
    "note": "",
    "period": "2018 to 2022",
    "population": "the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "states",
    "value": 16,
    "weights": "none (crude rates from counts)"
  },
  "states_top_n": {
    "display": "10",
    "estimand": "the number of highest-rate states examined (a definition)",
    "note": "",
    "period": "2018 to 2022",
    "population": "the 50 states and DC",
    "source": "wonder-lbd",
    "unit": "states",
    "value": 10,
    "weights": "none (definition)"
  },
  "us_imr": {
    "ci": [
      5.5,
      5.9
    ],
    "ciLevel": 0.95,
    "display": "5.7",
    "estimand": "births-weighted mean of county rates over all the deciles, bootstrap interval over counties",
    "n": 1206,
    "nUnit": "counties",
    "note": "",
    "period": "infant deaths and live births in 2015 to 2021",
    "population": "live births in all counties with a County Health Rankings rate, ranked by the ADI",
    "source": "chr",
    "unit": "infant deaths per 1,000 live births",
    "value": 5.66555,
    "weights": "births in each county (County Health Rankings denominator)"
  },
  "white_left_out_share": {
    "display": "0.1%",
    "estimand": "share of births in state-years whose deaths WONDER withholds, which leave both deaths and births",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to white mothers (single race, any ethnicity) in the United States",
    "source": "wonder-lbd",
    "unit": "percent of live births",
    "value": 0.143392,
    "weights": "none (full counts of births)"
  },
  "white_state_high": {
    "ci": [
      5.8,
      7.5
    ],
    "ciLevel": 0.95,
    "display": "6.7",
    "estimand": "crude rate from the death count, normal interval",
    "n": 263,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to white mothers (single race, any ethnicity) in Mississippi",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 6.65015,
    "weights": "none (crude rate from counts)"
  },
  "white_state_low": {
    "ci": [
      2.9,
      3.5
    ],
    "ciLevel": 0.95,
    "display": "3.2",
    "estimand": "crude rate from the death count, normal interval",
    "n": 457,
    "nUnit": "infant deaths",
    "note": "",
    "period": "2018 and 2019",
    "population": "live births to white mothers (single race, any ethnicity) in New Jersey",
    "source": "wonder-lbd",
    "unit": "infant deaths per 1,000 live births",
    "value": 3.23133,
    "weights": "none (crude rate from counts)"
  },
  "wonder_suppression_floor": {
    "display": "10",
    "estimand": "a cell with fewer deaths than this is withheld (a definition)",
    "note": "",
    "period": "infant deaths and live births in 2018 to 2022",
    "population": "cells of the WONDER linked birth and infant death files",
    "source": "wonder-lbd",
    "unit": "infant deaths",
    "value": 10,
    "weights": "none (definition)"
  }
}