Table 2.
Demographic distribution of the U.S. population stratified across the Environmental burden index quartiles.
| Environmental burden module quartiles | ||||||
|---|---|---|---|---|---|---|
| Demographics | All neighborhoods (N = 71,677) | First (lowest) (N = 17.928) | Second (N = 17,926) | Third (N = 17,922) | Fourth (highest) (N = 17,901) | p value |
| Total population | 320,286,908 | 81,322,605 | 83,492,777 | 81,067,500 | 74,404,026 | |
| Percent female Median (IQR) | 50.90 (50.87–50.93) | 50.61 (48.68–52.57) | 50.82 (48.83–52.87) | 51.13 (48.99–53.33) | 51.10 (48.84–53.47) | <0.001 |
| Age | ||||||
| Age 18–44 | 99,099,193 | 24,815,364 | 24,714,445 | 24,616,239 | 24,738,364 | <0.001 |
| Median Percent 18–44 (Median IQR) | 30.64 (18.70–48.90) | 30.60 (18.32–49.19) | 29.11 (17.90–46.48) | 30.04 (18.44–47.71) | 32.87 (20.20–52.18) | <0.001 |
| Age 45–64 | 83,324,737 | 22,047,858 | 21,989,968 | 20,778,533 | 18,437,598 | <0.001 |
| Median Percent 45–64 (Median IQR) | 26.7 (22.9–30.1) | 28.1 (24.4–31.5) | 27.1 (23.4–30.4) | 26.3 (22.6–29.6) | 25.2 (21.6–28.7) | <0.001 |
| Age ≥65 | 48,912,343 | 13,936,869 | 13,000,780 | 11,898,096 | 10,067,702 | <0.001 |
| Median Percent ≥65 (Median IQR) | 15.3 (11–19.6) | 17.2 (12.6–22.2) | 16.0 (11.8–20.0) | 14.8 (10.8–18.7) | 13.2 (9.5–17.4) | <0.001 |
| Race -No. (%) | ||||||
| Whites | 234,060,614 (79.36%) | 65,776,628 (86.18%) | 64,076,280 (82.19%) | 57,261,788 (76.81%) | 46,728,392 (71.10%) | <0.001 |
| Blacks | 40,860,717 (13.85%) | 5,661,363 (7.41%) | 9,005,144 (11.55%) | 12,051,195 (16.16%) | 14,017,833 (21.32%) | <0.001 |
| American Indian or Alaskan Native | 2,589,239 (0.87%) | 1,116,294 (1.46%) | 619,799 (0.79%) | 460,745 (0.61%) | 386,490 (0.58%) | <0.001 |
| Asian | 16,990,644 (5.76%) | 3,646,036 (4.77%) | 4,140,019 (5.31%) | 4,670,156 (6.26%) | 4,515,314 (6.86%) | <0.001 |
| Native Hawaiian or Other Pacific Islander | 430,518 (0.14%) | 119,420 (0.15%) | 113,407 (0.14%) | 102,803 (0.14%) | 93,750 (0.14%) | <0.001 |
| Ethnicity-No. (%) | ||||||
| Hispanic No. (%) | 57,316,166 (22.60%) | 12,796,993 (18.52) | 12,472,705 (18.36%) | 13,683,251 (22.00%) | 18,271,895 (33.6%) | <0.001 |
| Non-hispanic No. (%) | 196,407,478 (77.40%) | 56,296,564 (81.48%) | 55,450,401 (81.63%) | 48,514,042 (78.00%) | 35,983,554 (66.3%) | <0.001 |
| Lack of insurance | ||||||
| Median (IQR) | 9200 (6400–14000) | 8100 (6000–12000) | 8600 (6100–12800) | 9100 (6400–13900) | 11,400 (7500–17400) | <0.001 |
| Rurality No. (%) | ||||||
| Urban neighborhoods | 59,804 (83.4%) | 13,010 (72.6%) | 14,235 (79.4%) | 15,702 (87.6%) | 16,858 (94.2%) | <0.001 |
| Rural neighborhoods | 11,873 (16.6%) | 4919 (27.4%) | 3691 (20.6%) | 2220 (12.4%) | 1043 (5.8%) | <0.001 |