Table 6.

Univariate and multivariate risk factor analysis by malaria species.

Characteristics		%	P. vivax					P. falciparum
			n/N	Univariate		Multivariate		%	n/N	Univariate		Multivariate
				OR	[95% CI]	AOR	[95% CI]			OR	[95% CI]	AOR	[95% CI]
Gender
	Female	46.8	183/391	Ref				9.21	36/391	Ref
	Male	45.0	194/431	0.9	[0.7; 1.2]			12.8	55/431	1.5	[0.9; 2.4]	1.5	[0.9; 2.3] °
Age (years)
	<5	37.0	54/146	Ref		Ref		7.53	11/146	Ref
	5–14	50.0	121/242	1.7	[1.1; 2.6] *	1.7	[1.1; 2.6] *	11.6	28/242	1.8	[0.8; 3.9]	1.7	[0.8; 3.7]
	15–39	47.8	118/247	1.6	[1.0; 2.4] *	1.2	[0.7; 2.0]	10.9	27/247	1.6	[0.7; 3.5]	1.7	[0.7; 3.9]
	≥40	44.9	84/187	1.4	[0.9; 2.1]	0.9	[0.5; 1.7]	13.4	25/187	2.1	[1.0; 4.7] °	2.2	[0.9; 5.4] °
Main occupation
	None or others	43.86	225/513	Ref		Ref		10.5	54/513	Ref
	Farmer	49.2	152/309	1.3	[1.0; 1.7] °	1.6	[1.0; 2.4] *	12.0	37/309	1.2	[0.8; 1.9]	0.8	[0.4; 1.6]
Malaria episodes (previous 12 months)
	0	45.7	289/633	Ref				11.1	70/633	Ref
	≥1	46.5	87/187	1.1	[0.8; 1.5]			11.23	21/187	1.0	[0.6; 1.7]
Travel (previos month)
	No	46.3	341/736	Ref				11.1	82/736	Ref
	Yes	41.9	36/86	0.9	[0.6; 1.4]			10.5	9/86	0.9	[0.4; 2.1]
Housing structure (number of walls)
	0	47.3	53/112	Ref				10.7	12/112	Ref
	1–3	46.3	244/527	1.0	[0.6; 1.5]			10.4	55/527	1.0	[0.4; 2.3]
	4	44.4	79/178	0.9	[0.5; 1.4]			12.9	23/178	1.4	[0.5; 3.5]
Indoor residual spraying (previous 12 months)
	No	35.9	19/53	Ref				13.21	7/53	Ref
	Yes	46.5	353/759	1.4	[0.7; 2.5]			10.9	83/759	0.8	[0.3; 2.3]
Electricity available
	No	44.3	183/413	Ref				11.1	46/413	Ref
	Yes	47.8	193/404	1.0	[0.7; 1.4]			10.9	44/404	0.9	[0.5; 1.6]

* p < 0.05; ° p < 0.1; AOR: adjusted odds ratios; OR: crude odds ratios.