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Table 1 Characteristics of counties by the Area Deprivation Index level

From: Differential impact of mitigation policies and socioeconomic status on COVID-19 prevalence and social distancing in the United States

ADI Level Lowest / Q1 Low / Q2 High / Q3 Highest / Q4 All Levels
# of counties 522 522 522 521 2087
Observation time / SAH Implementation, days 95.7 (14.2) 95.8 (13.0) 94.0 (13.4) 86.2 (10.5) 92.9 (13.4)
Observation time / SAH Lifting, days 93.2 (3.8) 92.9 (4.6) 92.3 (5.0) 89.5 (4.6) 92.0 (4.8)
# of residents 176,972 (276,383) 120,052 (356,081) 70,334 (169,653) 37,381 (110,126) 101,215 (252,467)
Density, count per squared mile 43,367 (98,615) 25,825 (96,300) 15,697 (42,369) 13,972 (68,397) 24,726 (80,604)
Density - Low: 1st – 10th 65 (12.5%) 73 (14.0%) 47 (9.0%) 24 (4.6%) 209 (10.0%)
Density - Medium: 11th – 90th 349 (66.9%) 394 (75.5%) 450 (86.2%) 476 (91.5%) 1669 (80.0%)
Density - High: 91st – 100th 108 (20.7%) 55 (10.5%) 25 (4.8%) 20 (3.8%) 208 (10.0%)
Median age, years 41.5 (5.3) 42.3 (5.6) 42.1 (5.5) 40.7 (4.6) 41.7 (5.3)
% elderly 17.9% (5.3%) 19.2% (4.6%) 19.0% (4.3%) 17.6% (3.4%) 18.4% (4.5%)
Median family income, $ 83,408 (15,914) 65,721 (5581) 57,718 (4691) 47,992 (5932) 63,717 (15,940)
% families in poverty 6.1% (1.9%) 9.0% (2.0%) 11.9% (2.3%) 18.2% (4.9%) 11.3% (5.4%)
% people unemployed 4.3% (1.4%) 5.1% (1.2%) 6.3% (1.9%) 8.5% (3.3%) 6.0% (2.7%)
% people with at least high school education 92.3% (2.7%) 89.3% (2.9%) 86.3% (3.7%) 79.9% (4.5%) 87.0% (5.8%)
COVID-19 prevalence (# cases per 10,000 people)
On March 1st 0.0 (0.2) 0.0 (0.1) 0.0 (0.0) 0.0 (0.0) 0.0 (0.1)
At SAH implementation 1.7 (3.3) 1.0 (1.8) 0.9 (1.9) 2.6 (5.5) 1.6 (3.5)
At SAH lifting 26.6 (37.8) 19.4 (35.9) 21.9 (59.6) 28.5 (42.6) 24.1 (45.1)
Social Distancing Index
On March 1st 35.3 (7.5) 34.2 (7.1) 33.6 (7.1) 33.2 (6.9) 34.1 (7.2)
At SAH implementation 50.6 (11.7) 44.0 (11.2) 40.6 (10.8) 32.1 (11.3) 41.8 (13.1)
At SAH lifting 30.4 (11.6) 24.7 (10.0) 23.3 (9.2) 21.0 (8.7) 24.8 (10.5)
  1. Numbers represent mean while those within the brackets represent standard deviation
  2. ADI Area Deprivation Index, SAH Stay at Home