Table 4.

Standardized Incidence Ratios in Identified Hotspots in New Castle County, DE (2020)^*

	Hotspot 1			Hotspot 2			Hotspot 3			Hotspot 4
	Obs	Exp	SIR (CI)	Obs	Exp	SIR (CI)	Obs	Exp	SIR (CI)	Obs	Exp	SIR (CI)
Age Race Adjusted	113	85.40	1.32 (1.08, 1.57)	191	111.18	1.72 (1.47, 1.96)	69	74.43	0.93 (0.71, 1.15)	104	52.28	1.99 (1.61, 2.37)
<50 Black	9	3.65	2.47	17	6.64	2.56	15	13.11	1.14	12	3.76	3.19
<50 White	18	14.38	1.25	29	17.75	1.63	1	1.17	0.85	21	8.49	2.47
<50 Other/Unknown	2	1.40	1.42	2	1.26	1.59	0	0.39	0.00	2	0.72	2.79
>=50 Black	17	13.11	1.30	35	19.72	1.77	51	54.61	0.93	18	12.25	1.47
>=50 White	65	49.92	1.30	104	63.56	1.64	2	4.03	0.50	49	25.80	1.90
>=50 Other/Unknown	2	2.94	0.68	4	2.24	1.79	0	1.12	0.00	2	1.25	1.60

^*Obs = observed cases; Exp = expected cases. SIR = standardized incidence ratio, CI= 95% confidence interval; SIRs were estimated based on catchment area BC rates and adjusted for age and race