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Table 1 LLIN survivorship by assessment community

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

Water for washing nets Kessounou (South) Malanville (North) Allada (South) Kandi (North) Total
  Near Distant  
Distance to water for washing LLINs <0.05 km <0.05 km >5.0 km >5.0 km  
Baseline (T0) Households enrolled 501 501 500 500 2002
After 6 months (T6) Households eligible 501 501 500 500 2002
Households visited/opened 493 455 420 451 1819
Coded LLINs found 444 424 374 430 1672
(LLINs lost) (49) (31) (46) (21) (147)
Survivorship (%) 90 94 91 96 93
After 12 months (T12) Households eligible 452 470 454 479 1855
Households visited/opened 393 411 396 442 1642
Coded LLINs found 253 338 286 348 1225
(LLINs lost) (140) (73) (110) (94) (417)
Survivorship (%) 62 79 69 77 72
95% confidence interval 58.20-66.70 75.80-82.90 64.90-73.00 73.40-80.80 69.90-73.80
After 18 months (T18) Households eligible 312 397 344 385 1438
Households visited/opened 293 350 274 345 1262
Coded LLINs found 227 279 184 283 973
(LLINs lost) (66) (71) (90) (62) (289)
Survivorship (%) 49 65 51 65 57
  95% confidence interval 44.90-53.70 62.90-71.10 46.60-55.40 58.70-67.20 55.30-59.60