Table 2. A univariate analysis of the relationship between active trachoma and potential risk factors.

Variable	Number	Number with active trachoma	Prevalence	Adjusted OR (1)	Adjusted OR (2)
Reported water collection time (mins) in household
≤85	226	27	11.9%	1.00	1.00*
85 to 150	255	55	21.6%	1.83 (0.99-3.45)	2.02 (1.04-3.89)
150 to 210	242	47	19.4%	1.79 (0.95-3.39)	2.00 (1.00-3.95)
>210	173	35	20.2%	2.03 (1.03-3.99)	2.25 (1.13-4.46)
Litres of water collected per day per capita
≤8	233	45	19.3%	1.00	1.00
9-15	229	41	17.9%	0.97 (0.53-1.79)	1.02 (0.53-1.94)
15-20	195	31	15.9%	0.81 (0.42-1.56)	1.12 (0.51-2.47)
>20	206	38	18.4%	0.89 (0.48-1.65)	1.22 (0.68-2.18)
Cost water per month (US dollars)
$0	151	55	36.4%	1.00	1.00**
<$1	313	46	14.7%	0.31 (0.18-0.54)	0.30 (0.17-0.54)
$1-2	205	29	14.1%	0.29 (0.15-0.57)	0.31 (0.16-0.61)
>$2	227	34	15.0%	0.30 (0.16-0.56)	0.29 (0.15-0.57)
Facial Cleanliness
Dirty face	86	31	36.0%	1.00
Clean face	826	137	16.6%	0.55 (0.30-1.02)	0.56 (0.30-1.05)
Frequency of face washing
1-7 / week	307	59	19.2%	1.00	1.00
8-14 / week	565	101	17.9%	0.8 (0.6-1.2)	0.92 (0.63-1.35)
15-35 / week	25	5	20.0%	0.7 (0.2-2.2)	0.78 (0.24-2.43)
Last time washed hands:
Today	838	148	17.7%	1.00	1.00
Before today	58	16	27.6%	1.66(0.89-3.11)	1.65 (0.88-3.10)
Frequency of clothes washing
0-4 / month	364	73	20.1%	1.00	1.00*
5-8 / month	267	54	20.2%	1.04 (0.49-2.24)	0.98 (0.65-1.49)
9-12 / month	86	11	12.8%	0.49 (0.15-1.16)	0.54 (0.27-1.11)
>12 / month	179	26	14.5%	0.49 (0.20-1.19)	0.63 (0.37-1.06)

Some data were missing

¹Odds ratio adjusted for age, sex and household clustering

²Odds ratio adjusted for age, sex, socio-economic status and household clustering

^*p for trend ≤0.05

^**p for trend ≤0.01