{
  "alt": "Table with one row for each step from all tracts of the 2020 census to the tracts in the typology, giving the number of tracts at each step. Most tracts remain at the last step, and the institutional tracts and the tracts missing an input are the largest groups removed.",
  "caption": "Most tracts enter the typology. The institutional tracts and the tracts outside Puerto Rico that lack an input are the two largest exclusions, and the rows are counts of tracts, not of residents.",
  "data": [
    {
      "step": "Tracts of the 2020 census",
      "tracts": 85396
    },
    {
      "step": "Puerto Rico (outside the county map and the outcome measures)",
      "tracts": 981
    },
    {
      "step": "Other tracts missing at least one input or with no residents",
      "tracts": 1498
    },
    {
      "step": "Institutional tracts (25 percent or more of residents in group quarters)",
      "tracts": 1541
    },
    {
      "step": "Tracts with 200 or fewer residents",
      "tracts": 33
    },
    {
      "step": "Tracts in the typology",
      "tracts": 81343
    }
  ],
  "id": "sample_flow",
  "notes": [
    "Puerto Rico is left out because the county map and the outcome measures cover the 50 states and DC. A tract is institutional when at least {fact:inst_gq_pct} of its residents live in group quarters such as prisons, nursing homes or dormitories (SVI 2022), or when it is a known chronic-care tract. Tracts with {fact:pop_floor} or fewer residents are left out.",
    "A typed tract need not have an outcome. Life expectancy exists for {fact:n_le} of the typed tracts, and each outcome is compared over the typed tracts that have it."
  ],
  "source": "2020 census tracts with ACS 2019-2023 inputs, 2020 TIGER land area and SVI 2022 group-quarters shares; counts of tracts, full count",
  "spec": {
    "columns": [
      {
        "key": "step",
        "label": "Step"
      },
      {
        "format": {
          "thousands": true
        },
        "key": "tracts",
        "label": "Tracts"
      }
    ]
  },
  "subtitle": "Census tracts at each step from the 2020 census to the tracts with every input, counted at the first step that removes them",
  "title": "The typology covers {fact:n_tracts} of the {fact:n_tracts_all} census tracts",
  "type": "table",
  "width": "body"
}