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Table 2 Physical condition of nets during net surveys

From: Evidence for a useful life of more than three years for a polyester-based long-lasting insecticidal mosquito net in Western Uganda

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%