Table 3. Association of various factors with false positive Determine RDT results in plasma; uni- and multi-variable log-link binomial regression results adjusted for clustering within household (N = 11732).

	uni-variable			multi-variable*
Covariatestratum	PR	95%CI	P	PR	95%CI	P
Age
per 10 years	1.10	(1.04 to 1.16)	0.001	1.09	(1.03 to 1.15)	0.002
Elevation
per 100 meters	0.88	(0.86 to 0.90)	<0.001	0.78	(0.66 to 0.93)	0.006
Ambient temperature
per oC	1.26	(1.20 to 1.32)	<0.001	0.81	(0.59 to 1.10)	0.180
P. falciparum infection
negative	1	-	-	1	-	-
positive	1.93	(1.07 to 3.47)	0.028	1.47	(0.81 to 2.68)	0.210
Gender
female	1	-	-
male	1.00	(0.79 to 1.27)	0.992
S. haematobium infection
negative	1	-	-
positive	0.99	(0.58 to 1.69)	0.980

PR  =  probability ratio for a false positive result; p  =  p-value; 95% CI  = 95% confidence interval.

^*covariates were only included in multi-variable model if uni-variable p-value <0.2.