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