Table 1—

Incidence of type 1 diabetes in children in Philadelphia from 1995 to 1999 according to race and age

	Age (years)					Crude rate	Adjusted rate*
	0–4	5–9	10–14			Crude rate	Adjusted rate*
White
n	22	41	24	87
Population	48,736	44,577	42,352	135,665
Rate/100,000	9.0	18.4	11.3	12.8	13.0
95% CI	5.66–13.68	13.20–24.95	7.26–16.86	10.27–15.82	10.2–15.6
Black
n	14	36	67	117
Population	55,637	48,205	49,843	153,685
Rate/100,000	5.0	14.9	26.9	15.2	15.4
95% CI	2.75–8.44	10.46–20.68	20.83–34.13	12.59–18.25	12.6–18.1
Hispanic
n	5	6	10	21
Population	9,784	8,769	8,568	27,121
Rate/100,000	10.2	13.7	23.3	15.5	15.6
95% CI	3.31–23.86	5.02–29.86	11.19–52.89	5.59–23.69	8.9–22.2
Total†
n	43	86	105	234
Population	115,678	102,785	101,688	320,151
Rate/100,000	7.4	16.7	20.7	14.6	14.8
95% CI	5.38–10.02	13.38–20.67	16.89–25.00	12.81–16.61	12.9–16.7

*
↵* Direct age-adjusted method using the 1990 U.S. population;
†
↵† totals are all races 0–14 years of age.