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Table 7 Results from bio-assays using WHO cone test

From: Monitoring the physical and insecticidal durability of the long-lasting insecticidal net DawaPlus® 2.0 in three States in Nigeria

Variable

12 months

24 months

36 months

N = 30

N = 30

N = 30

Zamfara

 Knock down 60 min

  Mean (95% CI)

46.8% (39.5–54.1)

66.1% (60.0–72.3)

45.2% (40.9–49.6)

  Median (IQR)

50.0% (35.0–64.0)

69.0% (56.0–80.0)

43.0% (34.0–56.0)

 Mortality 24 h

  Mean (95% CI)

64.4% (57.8–71.2)

99.6% (99.5–100)

98.3% (96.6–100)

  Median (IQR)

70.0% (60.0–80.0)

100% (100–100)

100% (100–100)

 Optimal effectiveness

  Estimate (95% CI)

30.0% (16.2–48.7)

100% (–)

96.7% (77.7–99.6)

 Minimal effectiveness

  Estimate (95% CI)

80.0% (63.4–90.2)

100% (–)

100% (–)

Ebonyi

 Knock down 60 min

  Mean (95% CI)

58.3% (50.7–65.9)

52.0% (46.2–57.8)

42.3% (37.4–47.1)

  Median (IQR)

60.0% (34.0–80.0)

50.0% (40.0–66.0)

40.0% (34.0–48.0)

 Mortality 24 h

  Mean (95% CI)

65.0% (60.3–69.7)

99.2% (98.4–99.9)

97.3% (95.2–99.5)

  Median (IQR)

64.0% (60.0–74.0)

100% (100–100)

100% (100–100)

 Optimal effectiveness

  Estimate (95% CI)

16.7% (7.3–33.6)

100% (–)

96.7% (77.7–99.6)

 Minimal effectiveness

  Estimate (95% CI)

90.0% (72.7–96.8)

100% (–)

100% (–)

Oyo

 Knock down 60 min

  Mean (95% CI)

53.4% (47.9–58.9)

47.5% (41.3–53.6)

n.a

  Median (IQR)

54.0% (42.0–66.0)

44.0% (36.0–58.0)

 

 Mortality 24 h

  Mean (95% CI)

99.7% (99.2–100)

98.5% (97.0–99.9)

n.a

  Median (IQR)

100% (100–100)

100% (100–100)

 

 Optimal effectiveness

  Estimate (95% CI)

100% (–)

100% (–)

n.a

 Minimal effectiveness

  Estimate (95% CI)

100% (–)

100% (–)

n.a