Reading path
Methods first
5 chapters in reading order. A path is a way through the book that follows one question; every chapter also stands alone.
- 1Gradients, slopes and variance
Chapter 10.1 in Part X, How the estimates are made
Life expectancy is 1.12 years lower per ten-point step of the ADI within counties and lower in all 267 metros, and 70.3 percent of the variance of tract life expectancy lies between tracts in the same county, of which 26.7 points are estimation error in the modeled tract estimates.
PublishedNeighborhoodsusaleepadiplaceswonder-natalityacscensus-tiger
- 2The anatomy of a deprivation index
Chapter 10.2 in Part X, How the estimates are made
The Area Deprivation Index ranks census tracts almost as median home value does, with a rank correlation of −0.988 across 75,717 tracts (negative because the index rises as home values fall), and the home value term alone accounts for 74.3% of the variance of the score that the formula produces.
PublishedNeighborhoodsadiacssviusaleepopportunity-atlas
- 3A deprivation index at two zooms
Chapter 10.3 in Part X, How the estimates are made
A county's percentile on a deprivation index follows the average of its tracts' percentiles, with a correlation of 0.96, yet 32.7% of residents live in a tract more than 25 percentile points from their county's percentile.
PublishedNeighborhoodsadiacsusaleepopportunity-atlas
- 4Families of places
Chapter 10.4 in Part X, How the estimates are made
K-means sorts 75,717 census tracts into 4 families on 15 deprivation measures, and life expectancy for deaths in 2010 to 2015, which the sorting never used, runs from 74.7 years in the high-poverty family to 81.7 years in the high-income family.
PublishedNeighborhoodsadiacsusaleepopportunity-atlasplaces
- 5Place and the length of a life
Chapter 6.1 in Part VI, Early death
Life expectancy at birth is lower in more deprived neighborhoods, 74.0 against 82.3 years in the most and least deprived tenths of census tracts for deaths in 2010 to 2015, and county averages conceal differences within counties.
PublishedNeighborhoodsusaleepadiplacesacscensus-tigerpublished-estimates