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Table 3 Descriptive statistics of total hole counts and total hole area as measured using WHOPES guidelines, ruler measurements, and image analysis

From: Assessing bed net damage: comparisons of three measurement methods for estimating the size, shape, and distribution of holes on bed nets

Statistic Total hole counts Total area (cm2)
WHOPES Image Ruler WHOPES Image Ruler
Minimum 25 21 27 63 10 21
1st quartile 26 24 37 379 70 111
Median 34 34.5 41 2457 576 629
Mean 47 44 60 3486 797 1127
3rd quartile 54 58 72 4380 1470 1815
Maximum 114 110 142 12,839 1919 4301
Sum 468 444 602 34,862 7965 11,269
  1. Restricted to holes with diameters ≥ 0.5 cm. The World Health Organization Pesticide Evaluation Scheme. n = 10 LLINs