Table 1.

Clinical attack rate of chikungunya according to demographic characteristics, Managua, Nicaragua, 2014–2015

	N (%)	Clinical attack rate (%)	95% CI
All participants	3,377	2.9	2.3%, 3.4%
By sex
Female	1,699 (50.3)	2.6	1.8%, 3.6%
Male	1,678 (49.7)	3.1	2.3%, 3.9%
By age (years)
2–4	825 (24.4)	1.5	0.6%, 2.3%
5–7	848 (25.1)	1.7	0.8%, 2.5%
8–10	783 (23.2)	3.1	1.9%, 4.3%
11–14	921 (27.3)	5.0	3.6%, 6.4%
By water tap
Not inside	1,342 (40.2)	3.2	2.3%, 4.3%
Inside	2,011 (59.6)	2.6	1.9%, 3.3%
By floor
Dirt floor	364 (10.9)	3.0	2.4%, 3.6%
Other floor	2,989 (89.1)	1.9	0.5%, 3.3%
By wealth index
Very poor	1,326 (39.6)	3.3	2.3%, 4.2%
Poor	1,224 (36.5)	2.7	1.8%, 3.6%
Not poor	803 (24.0)	2.5	1.4%, 3.6%

CI = confidence interval.