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Table 4 Univariate association of infection risk and behavioural covariates

From: Forest malaria in Cambodia: the occupational and spatial clustering of Plasmodium vivax and Plasmodium falciparum infection risk in a cross-sectional survey in Mondulkiri province, Cambodia

Covariate N P. vivax P. falciparum
Prevalence p-value Prevalence p-value
Work-unrelated travels overnight in the last month to…
None 3465 4.9% (171)  < 0.001 2.0% (70)  < 0.001
Field sites 90 3.3% (3) 4.4% (4)
Forest sites 268 22.4% (60) 14.9% (40)
A village 177 13.6% (24) 5.6% (10)
A city 59 1.7% (1) 0% (0)
Unspecified 123 7.3% (9) 0.8% (1)
Work in the last two months in…
…deep forest
 No 4055 5.7% (231)  < 0.001 2.4% (98)  < 0.001
 Yes 145 25.5% (37) 18.6% (27)
…cassava field
 No 2115 5.6% (118)  < 0.05 2.9% (62) n.s
 Yes 2085 7.2% (150) 3.0% (63)
No work
 No 3186 7.9% (253)  < 0.001 3.7% (119)  < 0.001
 Yes 1014 1.5% (15) 0.6% (6)
Slept outdoors last night
Indoors 4124 6.2% (256)  < 0.01 2.9% (118)  < 0.01
Outdoors 76 15.8% (12) 9.2% (7)
Sprays repellent usually at bedtime
No 3668 6.7% (247)  < 0.05 3.2% (116)  < 0.10
Yes 524 4.0% (21) 1.7% (9)
Slept under net last night
No 320 10.0% (32)  < 0.01 6.6% (21)  < 0.001
Yes 3880 6.1% (236) 2.7% (104)
  1. Prevalence (n) of PCR-positivity across the strata of those behavioural variables that were statistically significant in univariate logistic regression. “n.s.”: Not significant