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Table 4 Exposure and parasitaemia detected after returning from forest at the end of the study

From: The prevalence, incidence and prevention of Plasmodium falciparum infections in forest rangers in Bu Gia Map National Park, Binh Phuoc province, Vietnam: a pilot study

  ACT %, 95% CI (n = 75) Placebo %, 95% CI (n = 75) Total P value
Did you use a bed net?
 Every night 49 65% 50 67% 99 1.0
 Some nights 16 21% 11 15% 27 0.4
 No bed net use 10 13% 14 19% 24 0.5
Did you use insect-repellent coil? 18 24% 8 11% 26 0.05
How many people did you meet while in forest (mean; 95% CI) 5.0 4.5–5.5 4.8 4.6–5.1 4.9 0.7
uPCR pos—P. falciparum 1 1% 1 1% 2 1
RDT positive 0 0% 0 0% 0 na
Microscopy positive 0 0% 1 1% 1 1