Table 3. Multivariate predictors of P. vivax parasite prevalence and proportion gametocyte positive.

		Parasite prevalence (n = 1,958)				Proportion gametocyte positive (n = 224)
		%	aOR	95% CI	P-value	%	aOR	95% CI	P-value
Gene copies/μL (log) 1							2.85	[1.74, 4.67]	<0.001
Mixed Pf/Pv (by pcr)	No					48.7
	Yes					49.4
Age group	0–3	10.0	1		<0.001	72.4	1		0.011
	>3–6	20.2	2.35	[1.41, 3.90]		71.7	1.10	[0.32, 3.75]
	>6–9	26.3	3.30	[2.02, 5.40]		55.9	0.53	[0.17, 1.68]
	>9–12	19.4	2.26	[1.31, 3.88]		38.2	0.36	[0.10, 1.33]
	>12–20	12.1	1.26	[0.71, 2.25]		41.7	0.33	[0.08, 1.31]
	>20	7.0	0.69	[0.43, 1.11]		31.7	0.20	[0.06, 0.67]
Malaria last 2 weeks	No	13.5			0.029	49.2
	Yes	6.0	0.48	[0.25, 0.93]		40.0
Febrile	No	13.2				48.8
	Yes	11.1				50.0
Anaemia	No	11.0				41.7	1		0.048
	Mild	15.5				47.3	0.66	[0.34, 1.30]
	Moderate	9.0				90.0	8.56	[0.94, 77.7]

aOR = adjusted odds ratio (adjusted for multivariate analysis), CI = confidence interval

¹ Increase in the probability that gametocytes are detected in a P. vivax positive sample, if the parasite density increases 10-fold