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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