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Table 2 Characteristics of tracts in the highest quartile of 1990 poverty rate by change in inflation adjusted median household income from 1990 to 2010

From: Addressing patient’s unmet social needs: disparities in access to social services in the United States from 1990 to 2014, a national times series study

Quartiles of Change in Inflation-Adjusted Median Household Income 1990–2020

Median Household Income, 1990

Mean

Densitya of Destinations that Support Living Needs, 1990

Mean, Median

Percent of Tracts with Rail Transit Stops, 1990

Densityb of Social Service Providers, 1990

Mean, Median

Lowest Tertile of Population Density (< 248 people/Km2)

  2003Q1 < -$1,390

$21,401*

2*, 1

1%

0.03, 0

  Q2 -$1,390 to < $4,195

$19,407*

1*, 0

0%

0.02*, 0

  Q3 $4,195 to < $9,917

$19,223*

1*, 0

0%

0.02*, 0

  Q4 >  = $9,917

$20,103

4, 0

1%

0.03, 0

Middle Tertile of Population Density (248–1,479 people/Km2)

  Q1 < -$5,808

$21,689*

17*, 10

1%*

0.39*, 0

  Q2 -$5,808 to < -$934

$18,001

20*, 12

2%*

0.57*, 0

  Q3 -$934 to < $4,472

$16,483*

23*, 13

1%*

0.80, 0

  Q4 >  = $4,472

$17,513

34, 13

4%

0.98, 0

Highest Tertile of Population Density (> 1,479people/Km2)

  Q1 < -$7,184

$22,600*

61*, 36

7%*

1.51*, 0

  Q2 -$7,184 to < -$1,765

$18,530*

64*, 36

6%*

1.77*, 0

  Q3 -$1,765 to < $4,142

$16,480*

68*, 37

6%*

2.07*, 1

  Q4 >  = $4,142

$17,792

101, 49

12%

3.14, 1

  1. aCount of destinations per Km2
  2. bCount of Social service providers per Km2
  3. *P < 0.05 for difference compared to the 4th quartile (largest) of change in inflation-adjusted median household income from 1990–2020