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Table 7 Cone bioassay results using Anopheles gambiae s.s (Kisumu strain) by net type and age

From: A longitudinal study of the durability of long-lasting insecticidal nets in Zambia

Net age at follow-up

PermaNet®

Olyset®

All nets

Geometric mean of  % of mosquitoes knocked down at 60 min of exposure (n) GM 95 % CI

 12 months

(18) 92.6

87.6–97.8

(18) 79.4

71.6–88.0

(36) 85.7

80.9–90.9

 24 months

(18) 29.6

12.3–69.1

(20) 42.2

27.2–65.3

(38) 35.7

22.3–56.7

Average % mortality at 24 h of exposure

 12 months

(18) 89.1

83.2–95.4

(18) 47.1

33.6–65.7

(36) 64.8

54.7–76.8

 24 months

(18) 31.9

14.9–67.0

(20) 51.4

38.7–68.2

(38) 41.0

27.9–60.1

  1. GM geometric mean, CI confidence interval