Table 5.

Modeled dry season parasite prevalence associated with community IRS coverage with Actellic 300CS or Fludora Fusion

Characteristic	Prevalence ratio	95% CI interval	P value
Increase of 10% in site IRS coverage	0.96	0.94–0.99	0.008
Weeks since IRS campaign	1.00	0.99–1.00	0.249
Sleeps under LLIN	0.86	0.78–0.95	0.004
No. of LLINs owned by family	0.96	0.91–1.01	0.100
Age, years	1.06	1.05–1.08	< 0.001
Age, additional year beyond age 9	0.89	0.87–0.91	< 0.001
Age, additional year beyond age 28	1.04	1.02–1.06	< 0.001
Female	0.90	0.83–0.97	0.005
Secondary + education	0.98	0.87–1.09	0.655
Open eaves	1.28	0.90–1.81	0.167
Natural or unfinished floor	1.02	0.85–1.22	0.833
Thatch roof	1.22	0.95–1.56	0.115
Unimproved water source	0.97	0.88–1.08	0.621
Primary residence ≥ 3 km from Lake Mweru	1.00	–	–
Primary residence < 3 km from Lake Mweru	0.81	0.62–1.06	0.119
Only residence < 3 km from Lake Mweru	0.88	0.68–1.15	0.358
Population density, 10 persons/100 m2	1.00	0.97–1.03	0.830
Log kilometers to the nearest health facility	1.05	0.96–1.16	0.256
No. of kilometers to nearest road	0.78	0.53–1.15	0.218
No. of kilometers to first-order stream	0.81	0.69–0.96	0.015
No. of kilometers to second-order stream	1.09	0.99–1.20	0.067
No. of kilometers to third-order stream	0.97	0.89–1.06	0.491
No. of kilometers to fourth-order stream	0.98	0.94–1.03	0.524
No. of kilometers to fifth-order stream	0.94	0.91–0.97	< 0.001
No. of kilometers to fifth-order stream beyond 9 km	1.18	1.08–1.29	< 0.001
87-Day lagged maximum temperature, °C	0.97	0.94–1.01	0.128
24-Day lagged average daily rainfall, mm	1.04	1.01–1.07	0.012

IRS = indoor residual spraying; LLIN = long-lasting insecticide-treated net.