A cross-sectional study of asymptomatic Plasmodium falciparum infection burden and risk factors in general population children in 12 villages in northern Uganda

Table 2 Weighted prevalence of asymptomatic Plasmodium falciparum malaria in 12 random villages in northern Uganda, by season and location in a district where indoor residual insecticide spraying (IRS) was implemented or not

Village	Visit year	Visit months	Season	Region	IRS district	Stratification variables		N enrolled	N with RDT data	Malaria prevalence (%)		Sum of weights for those enrolled (total = 2,829,988)	Sum of weights for those with RDT data (total = 2,763,690)
Village	Visit year	Visit months	Season	Region	IRS district	Proximity to water	Rural/urban	N enrolled	N with RDT data	Unweighted	Weighted	Sum of weights for those enrolled (total = 2,829,988)	Sum of weights for those with RDT data (total = 2,763,690)
63	2011	11	Wet	North-central	1	Near	Rural	85	72	16.5	20.1 (10.8, 29.4)	123,080	105,213
75	2014	2	Dry	North-central	1	Near	Urban	88	88	17.0	17.6 (9.6, 25.7)	939,218	939,218
19	2012	2, 3	Dry	North-central	1	Far	Rural	83	80	6.0	10.6 (0.7, 20.4)	30,433	29,382
77	2013	4, 5	Wet	North-central	1	Far	Urban	82	79	28.0	34.2 (20.7, 47.7)	34,195	33,039
29	2012	12	Wet	Northwest	0	Near	Rural	75	75	84.0	79.3 (67.4, 91.2)	355,600	355,600
31	2012	3, 4	Dry, wet	North-central	0	Near	Rural	89	85	61.8	63.6 (48.5, 78.7)	412,313	393,000
45	2013	3	Dry	Northwest	0	Near	Rural	76	71	78.9	85.7 (79.5, 91.9)	203,420	192,167
41	2014	1	Dry	North-central	0	Near	Urban	73	73	75.3	75.2 (63.3, 87.0)	500,210	500,210
100	2012	8, 9	Dry, wet	Northwest	0	Far	Rural	86	82	69.8	74.8 (63.1, 86.5)	76,323	72,991
30	2013	1	Dry	Northwest	0	Far	Rural	84	82	75.0	79.4 (67.8, 90.9)	46,442	44,956
20	2012	6, 7	Wet, dry	Northwest	0	Far	Rural	91	83	71.4	78.5 (68.5, 88.6)	67,092	60,102
40	2011	10, 11	Wet	North-central	0	Far	Urban	94	87	79.8	86.2 (77.6, 94.8)	41,662	37,812

The data in the table are sorted by IRS district, proximity to water (near/far), then by rural/urban. Urban and rural strata defined according to population count in the parish, based on the national census of 2002; proximity of village to water defined as “near” when the parish boundary was < 500 m from an all season surface water body (river, lake, or swamp), otherwise defined as “far”. 1 = January, 2 = February, 3 = March, 4 = April, 5 = May, 6 = June, 7 = July, 8 = August, 9 = September, 10 = October, 11 = November, 12 = December; NC North-central, NW Northwest, IRS indoor residual insecticide spray; dry season months were January to March and July to August; Wet season months were April to June and September to December; The season was deemed to be wet for children enrolled in villages 31 and 100 because most children were enrolled in the wet months, while season was deemed dry for children in village 20 because most were enrolled in the dry season month; Weights were trimmed to the 97th percentile, affecting 30 children whose weight was set to 14,409.34

ISSN: 1475-2875