Table 3.

A backwards selection multivariate logistic regression analysis of variables associated with risk of active trachoma, adjusting for household clustering. Age, sex and socio-economic status index were included in the model at each stage.

Variable	Adjusted OR (95% CI)
Age of child (years)
1 to 2	1.00**
3 to 4	1.18 (0.78-1.81)
5 to 6	0.58 (0.34-1.01)
7 to 9	0.31 (0.18-0.54)
Sex
Male	1.00
Female	1.22 (0.82-1.80)
Socio-economic status index of household
First quartile (poorest)	1.00
Second quartile	1.01 (0.55-1.87)
Third quartile	0.66 (0.35-1.25)
Fourth quartile (richest)	1.52 (0.79-2.90)
Reported water collection time (mins)
≤85	1.00
85 to 150	2.15 (1.13-4.10)
150 to 210	1.96 (1.00-3.01)
>210	1.96 (1.00-3.85)
Years lived in village
<10	1.00
≥10	0.56 (0.35-0.89)
Cattle in same room as people overnight
No	1.00
Yes	2.21 (1.29-3.79)

^**p for trend ≤0.01