Environmental, entomological, socioeconomic and behavioural risk factors for malaria attacks in Amerindian children of Camopi, French Guiana

Table 1 Risk factors for malaria attacks.

Variable	Categories	No. of children	Incidence rate	Hazard ratio	95% CI	p value
River	Upstream Oyapock	262	0.407	1.00
	Downstream Oyapock	76	0.551	1.35	1.08-1.69	0.008**
	Camopi	228	0.729	1.37	1.13-1.66	0.002**
Percentage cleared around home within 50 metres	<50	150	0.686	1.00
	50-75	279	0.542	0.81	0.71-0.93	0.002**
	>75	96	0.432	0.84	0.67-1.05	0.119
Distance to Camopi, metres	≤500	137	0.407	1.00
	501-2000	208	0.451	1.13	0.93-1.38	0.208
	>2000	221	0.754	1.61	1.33-1.94	<0.001**
Distance to the forest, metres	≤50	169	0.737	1.00
	51-150	202	0.538	0.79	0.68-0.91	0.001**
	>150	156	0.393	0.73	0.60-0.88	0.001**
Number of occupants	<7	223	0.512	1.00
	7-10	195	0.594	1.17	1.01-1.35	0.037*
	≥11	107	0.591	1.26	1.07-1.48	0.005**
Bedtime, hours	<7:00 pm	103	0.489	1.00
	≥7:00 pm	354	0.584	1.18	1.01-1.38	0.034*

Multivariate analysis of the risk of malaria transmission using a multiple failure Cox model, stratified for year of birth. The saturated model included 32 variables, which were significant at p < 0.20 in univariate analysis. Analysis time = 2279 person-years, CI = confidence interval. Symbols * and ** correspond to statistical significances at 0.05 and 0.01 first-order risks, respectively.

ISSN: 1475-2875