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Table 1 Mean proportion of insemination of Anopheles funestus and An. arabiensis collected at different time points

From: Wild populations of malaria vectors can mate both inside and outside human dwellings

Experiments Collection time point Anopheles funestus Anopheles arabiensis
No. females collected Proportion inseminated (95% CI)a OR (95%CI) for insemination P-value No. females collected Proportion inseminated (95% CI)a OR (95% CI) for insemination P-value
Round 1 of studies in experimental huts in rural Tanzania (14 nights) Evening (6:00 p.m.) 191 60.7% (53.5 - 67.9) Reference   228 60.6% (55.8 - 65.4) Reference  
Night (11:00 p.m.) 175 79.6% (74.5 - 84.7) 2.39 (1.50–3.79)  < 0.001 240 80.4% (76.3 - 84.5) 2.54 (1.69–3.83)  < 0.001
Morning (6:00 a.m.) 123 92.8% (89.0 - 96.6) 6.10 (3.14–11.85)  < 0.001 179 88.1% (83.7 - 92.5) 4.91 (2.90–8.31)  < 0.001
Round 2 of studies in experimental huts in rural Tanzania (10 nights) Evening (6:00 p.m.) 17 25% (5.2 - 44.8) Reference   37 46.1% (38.1 - 54.1) Reference  
Night (11:00 p.m.) 12 71.4% (42.3 - 100) 2.28 (1.14–3.51) 0.071 36 72.4% (55.2 - 89.6) 2.46 (1.36–4.58) 0.046
Morning (6:00 a.m.) 16 83.3% (67.0 - 99.6) 3.12 (1.26–5.42)  < 0.001 36 74.6% (62.1 - 87.1) 4.42 (2.02–6.21)  < 0.001
Studies in village houses in rural Tanzania occupied by local villagers Evening (6:00 p.m.) 130 75.5% (67.8 - 83.2) Reference   115 80.9% (72.8 - 89.0) Reference  
Night (11:00 p.m.) 107 85.9% (78.8 - 93.0) 2.09 (1.06–4.14) 0.03 128 87.6% (81.7 - 93.5) 1.63 (0.83–3.19) 0.15
Morning (6:00 a.m.) 113 94.7% (90.7 - 98.7) 6.14 (2.56–14.74)  < 0.001 126 91.2% (86.5 - 95.9) 2.79 (1.30–6.02) 0.01
  1. OR Odds ratio
  2. aConfidence interval of the mean