. Author manuscript; available in PMC: 2019 May 6.

Published in final edited form as: Pediatr Infect Dis J. 2017 Oct;36(10):e252–e257. doi: 10.1097/INF.0000000000001644

Table 2.

Intussusception hospitalizations rates per 100,000 and rate ratios and 95% confidence intervals (CI) by age group in the pre- (2001–2005) and post- (2007–2013) rotavirus vaccine introduction years, by age group

Age group	2001–2005		2007–2013		Rate ratio (95% CI)	p-value
Age group	Average annual no.	Mean rate (min, max)	Average annual no.	Mean rate (min, max)	Rate ratio (95% CI)	p-value
<12 months	189	82.2 (77.1, 87.6)	129	68.7 (64.4, 73.3)	0.84 (0.76, 0.92)	0.0001
0–5 weeks	2	6.0 (3.0, 12.1)	1	4.6 (2.2, 9.7)	0.77 (0.28, 2.11)	0.6077
6–14 weeks	10	26.2 (20.0, 34.4)	7	22.5 (17.1, 29.6)	0.86 (0.58, 1.26)	0.4418
15–24 weeks	35	79.8 (68.8, 92.5)	24	66.3 (57.0, 77.2)	0.83 (0.67, 1.03)	0.0874
25–34 weeks	56	127.8 (113.7, 143.6)	30	83.8 (73.2, 95.9)	0.66 (0.55, 0.78)	<.0001
35+ weeks	86	114.1 (103.8, 125.4)	67	109.3 (99.8, 119.7)	0.96 (0.84, 1.09)	0.5222