Skip to main content

Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Table 2 Reasons for net loss (attrition): T 12 and T 18 questionnaire* response summary

From: Durability assessment results suggest a serviceable life of two, rather than three, years for the current long-lasting insecticidal (mosquito) net (LLIN) intervention in Benin

  Kessounou (South) Malanville (North) Allada (South) Kandi (North) Total
After 6 months (T6) (LLINs lost) (49) (31) (46) (21) (147)
‘physical damage’ responses 10 3 5 1 19
‘removal’ responses 35 28 41 20 124
‘re-purposed’ responses 4 0 0 0 4
After 12 months (T12) (LLINs lost) (140) (73) (110) (94) (417)
Questionnaires administered 140 73 110 94 417
‘physical damage’ responses 79 19 13 7 118
‘removal” resonses 34 49 85 72 240
‘re-purposed’ responses 27 05 12 15 59
Attrition rate-1 (%) 18 05 04 02 07
95% confidence interval 14.67-21-35 02.92-06.56 02.29-05.62 00.81-03.13 05.82-08.03
Attrition rate-2 14 15 25 18 18
95% confidence interval 11.03-17.07 12.48-18.79 21.59-29.18 15.25-22.03 16.55-19.93
Attrition rate-3 06 01 02 03 03
95% confidence interval 04.-39-08.65 00.43-02.31 01.38-04.15 01.83-04.89 02.47-04.01
% net loss (total attrition) 38 21 31 23 28
After 18 months (T18) (LLINs lost) (66) (71) (90) (62) (289)
Questionnaires administered 66 71 90 62 289
‘physical damage’ responses 38 36 31 27 132
‘removal’ responses 26 34 59 35 154
‘re-purposed’ responses 2 1 0 0 3
Attrition rate-1 25 12 10 07 14
95% confidence interval 21.74-29.34 09.06-14.68 07.49-12.72 05.08-09.58 12.01-15.00
Attrition rate-2 19 22 37 25 26
95% confidence interval 15.77-22.63 18.74-26.00 32.88-41.32 21.78-29.39 24.00-27.84
Attrition rate-3 07 01 02 03 03
95% confidence interval 04.73-09.11 00.55-02.59 01.38-04.15 01.83-04.89 02.60-04.17
% net loss (total attrition) 51 35 49 35 43
  1. *administered to all households if open and missing coded net.