Table 6 Predictors of functional survival of long-lasting insecticidal nets over a 2-year follow-up period in Ethiopia

Gender of head of household (n = 1193)

 Male

6.6 (6.1–7.2)

1.0

NA

 Female

6.3 (5.6–7.0)

1.0 (0.8–1.1)

Educational status of head of household (n = 1170)

 Illiterate

6.7 (6.1–7.2)

1.0

1.0

 Read and write

6.4 (5.1–7.6)

0.9 (0.7–1.1)

0.9 (0.7–1.3)

 Primary

6.3 (5.5–7.1)

0.9 (0.8–1.1)

1.0 (0.9–1.3)

 Secondary and above

6.0 (4.7–7.4)

0.9 (0.7–1.1)

0.9 (0.7–1.2)

Wealth status (n = 1184)

 Poor

6.9 (6.2–7.6)

1.0

1.0

 Middle

6.4 (5.7–7.1)

0.9 (0.8–1.0)

1.0 (0.8–1.2)

 Rich

6.3 (5.6–7.0)

0.9 (0.8–1.0)

0.9 (0.8–1.2)

Open eave (n = 1176)

 No

6. 6 (6.1–7.0)

1.0

NA

 Yes

6.7 (5.7–7.8)

1.0 (0.9–1.2)

LLIN used last night (n = 833)

 No

6.8 (6.0–7.7)

1.0

1.0

 Yes

5.9 (5.4–6.5)

0.8 (0.7–0.97)*

1.0 (0.7–1.0)

LLIN ever washed (n = 833)

 No

6.2 (5.6–6.7)

1.0

 Yes

6.3 (5.5–7.0)

1.0 (0.9–1.2)

NA

LLIN was clean (n = 833)

 No

7.0 (6.3–7.6)

1.0

1.0

 Yes

5.3 (4.7–6.0)

0.7 (0.6–0.8)*

0.8 (0.6–0.9) *

Rats present in the house (n = 858)

 No

5.9 (5.3–6.5)

1.0

1.0

 Yes

6.3 (5.6–7.0)

1.1 (1.0–1.3)

1.1 (0.9–1.3)

Cat present in the house (n = 858)

 No

6.2 (5.6–6.8)

1.0

 Yes

6.0 (5.3–6.6)

1.0 (0.8–1.1)

NA

Distance from mosquito breeding site (n = 1193) (km)

 ≤ 1

6.1 (5.5–6.8)

1.0

1.0

 > 1

6.7 (6.2–7.2)

1.2 (1.1–1.3)*

1.3 (1.1–1.6)*

Household population size (n = 1193)

 ≤ 5

6.3 (5.6–6.9)

1.0

1.0

 > 5

6.7 (6.2–7.3)

1.1 (1.0–1.3)

1.1 (0.9–1.3)