Table 1.

Arrest disproportion and descriptive statistics across Police Service Areas (PSAs)

	All PSAs	Predominantly white PSA	Predominantly African American PSA	Difference between predominantly white and predominantly African American PSAs
	n = 56	n = 18	n = 38
	Mean (SD) Range	Mean (SD) Range	Mean (SD) Range	Difference in means (p value)
Disproportion African American arrests	2.87 (3.08) 0.94–16.09	6.31 (3.47) 2.09–16.09	1.25 (0.32) 0.94–2.10	5.07 (< 0.001)
Disproportion white arrests	0.89 (1.11) 0.06–6.16	0.36 (0.23) .09–0.91	1.14 (1.27) 0.06–6.16	− 0.08 (0.01)
Disproportion African American male arrests	5.19 (5.63) 1.71–27.57	11.42 (6.44) 3.68–27.57	2.25 (0.46) 1.71–3.52	9.17 (< 0.001)
Disproportion white male arrests	1.50 (1.97) 0.09–10.43	0.65 (0.45) 0.15–1.75	1.90 (2.27) 0.09–10.43	− 1.25 (0.02)
% white residents	32.27 (30.15) 0.61–85.33	71.77 (12.66) 49.78–85.33	13.55 (12.61) 0.61–37.67	58.22 (< 0.001)
% African American residents	57.53 (34.00) 3.46–97.50	14.80 (11.89) 3.46–39.56	77.77 (18.57) 38.92–97.50	− 62.97 (< 0.001)
% Female residents	52.71 (3.42) 43.3–59.1	51.13 (3.77) 44.40–57.30	53.46 (3.02) 43.30–59.10	− 2.32 (0.02)
% Unemployed	12.84 (8.17) 2.3–33.0	4.85 (1.83) 2.30–7.80	16.62 (7.20) 4.80–33.0	− 11.77 (< 0.001)
Average family income	116,281 (71,729) 38,160 – 336,739	200,123 (61,382) 130,285-336,739	76,567 (29,621) 38,160 – 152,011	123,556 (< 0.001)

*Statistically significant differences in italic