TABLE 1—
Sociodemographic Characteristics of 29 241 US County-Years: 1987–2016
| Jail Incarceration Rate Quartilesa |
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| Characteristic | Total (n = 29 241), Median (IQR) | First Quartile (n = 7311), Median (IQR) | Second Quartile (n = 7310), Median (IQR) | Third Quartile (n = 7310), Median (IQR) | Fourth Quartile (n = 7310), Median (IQR) |
| Age-adjusted mortality rate (per 100 000) | 883.7 (789.9–976.4) | 873.3 (782.6–959.9) | 884.1 (793.3–976.8) | 881.9 (793.8–971.7) | 897.6 (789.8–996.3) |
| Total county population (in 1000s) | 73.3 (27.1–206.5) | 40.4 (17.2–100.6) | 64 (25.8–162.2) | 102.8 (38.6–293.3) | 124.2 (36.4–409) |
| % of population in poverty | 13.9 (10.3–18.3) | 12.4 (9.4–16.2) | 13.4 (10.0–17.8) | 13.9 (10.1–17.9) | 16.1 (12.3–20.6) |
| Total crime rate (per 10 000) | 304.3 (185.5–452.3) | 226.2 (115.6–354.5) | 274.4 (172.7–409.5) | 335.2 (225.9–471.3) | 392.0 (253.5–556.4) |
| % Black residents in county | 5.3 (1.2–17.4) | 1.3 (0.3–5.2) | 3.9 (1.0–11.8) | 8.2 (2.7–18.6) | 14.4 (4.1–30.3) |
| % of population unemployed | 5.8 (4.4–7.7) | 5.6 (4.2–7.4) | 5.8 (4.4–7.6) | 5.7 (4.4–7.4) | 6.3 (4.8–8.7) |
| State incarceration rate (per 10 000) | 34.8 (24.7–44.0) | 26.2 (18.3–36.4) | 34.4 (25.1–44.2) | 37.2 (27.9–46.7) | 39.5 (31.5–46.2) |
Note. IQR = interquartile range.
a
First quartile: 0, 0.26; second quartile: 0.26, 0.58; third quartile: 0.58, 1.44; fourth quartile: > 1.44.