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Table 1 Protective efficacy of house design modifications against house-entering malaria vectors

From: House design modifications reduce indoor resting malaria vector densities in rice irrigation scheme area in western Kenya

  Anopheles gambiae
Survey Date No. collected in control houses No. collected in modified houses Mean number of mosquitoes in control houses (95% CIs) Mean number of mosquitoes in modified houses (95%CIs) Percentage reduction compared with control
10/22/07 37 12 4(2–6) 1(1–3) 68
11/05/07 41 10 4(2–6) 1(-1–3) 76*
11/21/07 66 14 7(4–9) 1(-1–4) 79*
12/03/07 55 11 6(3–8) 1(-1–3) 80*
12/18/07 75 15 7(2–12) 1(0–2) 82*
02/05/08 66 16 7(2–12) 2(-0–4) 76*
02/21/08 77 19 8(1–15) 2(0–4) 76*
03/06/08 84 17 8(3–14) 2(1–3) 80*
  1. CI, confidence interval, * P < 0.05, Degree of freedom 18 (n-2) for all surveys dates, No, Number.