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Table 6 Final linear model of pHI, Waspam, Nicaragua (n = 163 nets)

From: Evaluation of the durability and use of long‐lasting insecticidal nets in Nicaragua

Variable Coefficient (95 % CI) p-value
Intercept 1.336 (0.673–1.999) < 0.001*
Collection time point (ref: six months)
 12 months 0.105 (-0.455–0.666) 0.71
 24 months 0.513 (-1.139–2.165) 0.54
 36 months 1.650 (0.817–2.485) < 0.001*
No. of people sleeping in the home the night before the survey
(ref: 0–4 people)
 5–9 people − 0.705 (− 1.280– − 0.130) 0.02*
 10 + people − 0.179 (− 0.839–0.480) 0.59
Water source used to wash net
(ref: Piped water)
 Well water 0.026 (− 0.296–0.349) 0.87
 River water 0.345 (− 0.070–0.760) 0.10
Washed > 6 times
(ref: No)
 Yes 0.220 (− 0.081–0.521) 0.15
Washing method
(ref: By hand)
  
 Stone sink/river rock − 0.203 (− 0.624–0.217) 0.34
 Wooden washboard − 0.149 (− 0.568–0.269) 0.48
Interaction of collection time point and no. of people sleeping in the home
(ref: 6 months: 0–4 people)
 12 months: 5–9 people 1.347 (0.267–2.427) 0.01*
 24 months: 5–9 people 1.011 (− 0.682–2.704) 0.24
 36 months: 5–9 people − 0.273 (− 1.184–0.637) 0.55
 24 months: 10 + people 0.794 (− 1.033–2.662) 0.39
 36 months: 10 + people − 0.496 (− 1.553–0.561) 0.35
  1. * p < 0.05;
  2. R2 = 0.460, F-statistic 8.172, p-value = 3.457 × 10–13
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