Table 4 Alpha-cypermethrin content during follow-up; IQR = Inter-Quartile Range (single sample per net)
Net type | Time of follow-up | ||||
|---|---|---|---|---|---|
6 months | 12 months | 24 months | 36 months | 42 months | |
LLIN | |||||
Number tested | 38 | 37 | 37 | 36 | 21 |
Median mg/m2 | 193.0 | 143.0 | 135.7 | 73.8 | 56.2 |
IQR | 166, 210 | 95, 177 | 81, 184 | 51, 105 | 17, 116 |
% > 15 mg/m2 | 100% | 100% | 97% | 94% | 81% |
% > 3 mg/m2 | 100% | 100% | 97% | 94% | 95% |
Conventional ITN | |||||
Number tested | 40 | 40 | 8 | ||
Median mg/m2 | 13.9 | 7.5 | 1.6 | Not done | Not done |
IQR | 2.3, 19.7 | 0.7, 13, 3 | 0.8, 7.4 | ||
% > 15 mg/m2 | 40% | 18% | 0% | ||
% > 3 mg/m2 | 70% | 53% | 37% | ||