TABLE 1.

Incidence of Intussusception Hospitalization Among Infants (<1 Year of Age) by Various Demographic Characteristics for 35 US States, 2002–2004

Parameter	n	Rate per 100 000 Infants	RR (95% CI)
Total	3463	33.6
Gender
Male	2097	39.8	1.5 (1.4–1.6)
Female	1366	27.1	Reference
Race/ethnicitya
White, non-Hispanic	799	27.0	Reference
Black, non-Hispanic	356	37.0	1.4 (1.2–1.6)
Hispanic	881	45.4	1.7 (1.5–1.9)
Asian or Pacific Islander	73	20.1	0.7 (0.6–1.0)
Other	202
Age groups, wk
1–5	43	4.3	Reference
6–14	207	11.6	2.7 (1.9–3.7)
15–24	795	40.1	9.2 (6.8–12.6)
25–32	860	54.3	12.5 (9.2–17.0)
33–52	1557	39.3	9.1 (6.7–12.3)
Region of country
Northeast	562	36.0	1.3 (1.2–1.5)
Midwest	623	26.7	Reference
South	1264	34.4	1.3 (1.2–1.4)
West	1014	37.2	1.4 (1.3–1.5)

Data are from the SID of the HCUP.¹⁷,¹⁸

^aRace/ethnicity rates restricted to 16 states with <5% missing race/ethnicity data.