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Table 2 Number of blood slides examined and malaria prevalence by study arm in the baseline and follow-up surveys

From: Effect of combining mosquito repellent and insecticide treated net on malaria prevalence in Southern Ethiopia: a cluster-randomised trial

Study arm Number (%)
  Baseline Survey 1 Survey 2
Repellent + LLINs group    
 People in the households 3078 3079 3078
 Finger-prick blood slides examined 2622 (85.2) 2301 (74.7) 2497 (81.1)
 Slides positive for any malaria parasite 65 (2.5) 20 (0.9) 24 (1.0)
P. falciparum only 42 (1.6) 14 (0.6) 9 (0.4)
P. vivax only 23 (0.9) 6 (0.3) 15 (0.6)
 Mixed infections (Pf/Pv) 0 (0.0) 0 (0.0) 0 (0.0)
LLINs alone group    
 People in the households 3004 3003 3002
 Finger-prick blood slides examined 2600 (86.6) 2149 (71.6) 2396 (79.8)
 Slides positive for any malaria parasite 31 (1.2) 13 (0.6) 23 (1.0)
P. falciparum only 18 (0.7) 6 (0.3) 13 (0.5)
P. vivax only 12 (0.5) 7 (0.3) 10 (0.4)
 Mixed infections (Pf/Pv) 1 (0.04) 0 (0.0) 0 (0.0)
Total    
 People in the households 6082 6082 6080
 Finger-prick blood slides examined 5222 (85.9) 4450 (73.2) 4893 (80.5)
 Slides positive for any malaria parasite 96 (1.8) 33 (0.7) 47 (1.0)
P. falciparum only 60 (1.1) 20 (0.4) 22 (0.4)
P. vivax only 35 (0.7) 13 (0.3) 25 (0.5)
 Mixed infections (Pf/Pv) 1 (0.02) 0 (0.0) 0 (0.0)
  1. LLIN = Long-lasting insecticidal net, P. f = Plasmodium falciparum; P. v = Plasmodium vivax.