Spatially-explicit risk profiling of Plasmodium falciparum infections at a small scale: a geostatistical modelling approach

Table 1 Results of the bivariate logistic regression model for P. falciparum infections among 3,962 children from 55 rural schools in the Man region, western Côte d'Ivoire.

Indicators	P. falciparum infection prevalence
	OR^a	95% CI	P-value (AIC^b)
Age (years)
6–10	1
11–16	0.70	0.61, 0.8	<0.001
Socioeconomic status
Most poor	1
Very poor	1.04	0.84, 1.28
Poor	1.24	1.01, 1.53
Less poor	0.95	0.77, 1.16
Least poor	0.86	0.70, 1.06	0.011
Sleeping under a bed net	0.79	0.65, 0.98	0.030
Distance to health care facility	1.17	1.09, 1.25	<0.001
NDVI
Mean I^c	0.96	0.91, 1.03	0.333
Mean II^d	1.05	0.99, 1.12	0.131 (5139)
Mean III^e	0.96	0.90, 1.03	0.228
Annual mean	1.20	1.12, 1.29	<0.001 (5110)
Mean of the transmission season	1.19	1.11, 1.27	<0.001 (5114)
RFE
Mean I^c	0.88	0.82, 0.94	<0.001 (5126)
Mean II^d	1.04	0.97, 1.11	0.289
Mean III^e	1.13	1.05, 1.20	<0.001 (5129)
Sum of annual rainfall	1.11	1.04, 1.18	0.003 (5132)
Mean of the transmission season^f	1.14	1.07, 1.21	<0.001 (5125)
Maximum LST	1.03	0.96, 1.09	0.449
Distance to rivers (categorized)
<500 m	1
500–999 m	1.22	1.03, 1.46
= 1000 m	0.63	0.54, 0.74	<0.001

^aOR: odds ratio
^bAIC: Akaike information criterion. The smaller the AIC the better the model performance
^cMean I: Mean value during the month prior to blood sample collection
^dMean II: Mean value during the month of collection and the previous month
^eMean III: Mean value during the month of collection and the two previous months
^fThe main transmission season of malaria is from June to August