Table 2 Physical condition of nets during net surveys
Indicator | Time of follow-up in months | |||
|---|---|---|---|---|
6-12 | 18-24 | 30-36 | 37-42 | |
Number of nets in sample | 447 | 239 | 122 | 31 |
Proportion with any holes | 25.7% | 46.9% | 63.1% | 77.4% |
95% CI | 21.7, 30.0 | 40.4, 53.4 | 53.9, 71.7 | 58.9, 90.4 |
Proportionate Hole Index (pHI) | ||||
mean | 13.4 | 45.6 | 91.5 | 161.4 |
95% CI | 8.8, 18, 0 | 33.0, 58.2 | 63.1, 119.9 | 76.5, 246.3 |
range | 0 to 618 | 0 to 803 | 0 to 939 | 0 to 1220 |
Simple Hole Index (sHI) | ||||
mean | 1.6 | 4.9 | 10.3 | 15.7 |
95% CI | 1.2, 2.0 | 3.8, 6.0 | 7.4, 13.2 | 8.7, 22.8 |
range | 0 to 46 | 0 to 65 | 0 to 110 | 0 to 90 |
Distribution by pHI category | ||||
0-24 | 90.6% | 72.8% | 58.2% | 29.0% |
25-299 | 9.2% | 23.9% | 35.3% | 58.1% |
300+ | 0.2% | 3.4% | 6.6% | 12.9% |