Table 3.

Conditional logistic regression (adjusted for school) of personal characteristics

	Parasitaemia
	Postives, in %	Univariate			Multivariate
	n = 1,649	OR	95% CI	p value	OR	95% CI	p value
Sex
Female	39.0	1			1
Male	43.9	1.21	0.98–1.49	0.08	1.20	0.98–1.49	0.09
Age (per year)a		0.91	0.87–0.94	<0.001	0.91	0.87–0.95	<0.001
Hospital if sickb
No	42.6	1
Yes	40.7	0.88	0.71–1.09	0.24
House typec
Compound	28.4	1
Semi-detached	45.1	1.18	0.77–1.83
Single	43.2	1.14	0.80–1.62	0.73
Bed net used
No	35.6	1			1
Yes	48.1	1.28	1.02–1.59	0.03	1.25	1–1.56	0.06
NHIS enrolmente
No	45.5	1			1
Yes	37.3	0.77	0.62–0.96	0.02	0.75	0.60–0.94	0.01

OR odds ratio, CI confidence interval.

^aLinear regression.

^bIndividuals who reported to visit a hospital if sick according to the interview; 15 missings.

^c38 missings.

^dIndividuals who reported to use bed nets regularly according to the interview; 9 missings.

^eNHIS, member of National Health Insurance Scheme; 4 missings.