Table 1.

Baseline characteristics

Characteristic	Sites
	Kibirizi n = 5148	Rukara n = 2696	Busogo n = 913
Altitude (m)	1718	1591	2247
Average annual rainfall (mm) [36]	81	75	129
EIRa [15]	–	20.9	<1b
IRS with carbamates	Sep ‘14; Feb ‘15
Dates of study	Apr ‘14–Apr ‘15	Oct ‘14–Mar ‘15	Nov ‘14–Apr ‘15
Mean age (95% CI)	22.3 (21.7–22.8)	20.8 (20.1–21.5)	20.5 (19.5–21.6)
Age <5 years, % (95% CI)	19.4 (18.4–20.6)	17.5 (16.2–19.0)	22.3 (19.8–25.2)
SPR if age <5 years, % (95% CI)	32.1 (29.1–35.1)	41.6 (37.2–46.1)	2.4 (0.3–4.6)
SPR if age ≥5 years, % (95% CI)	36.0 (34.5–37.5)	55.3 (53.2–57.4)	11.6 (9.2–13.9)

EIR entomological inoculation rate, IRS indoor residual spraying, CI confidence interval, SPR slide positivity rate

^aEIR defined as the number of infective Anopheles mosquito bites per person per year

^bData provided from closest sentinel site, Bungwe (no sentinel site in Busogo HC’s district)