Table 1.

Prevalence ratios (PR) and 95% confidence intervals (CI) for schistosomiasis infection of individuals/heads of households according to demographic variables

Variable	No. of individuals	PR	95% CI
Sex
Female	295	0.95	(0.82 –1.10)
Male	264	1.00
Generalized score statistic = 0.47, df = 1, p = .4916
Age group
> 65	45	1.05	(0.70 – 1.56)
45 – 65	116	1.02	(0.78 – 1.34)
30 – 44	86	1.40	(1.12 – 1.76)
15 – 29	130	1.56	(1.23 – 1.98)
< 14	182	1.00
Generalized score statistic = 24.20, df = 4, p < .0001
Place of residence, head of household
Rural Area	273	1.29	(1.06 – 1.57)
VDG	286	1.00
Generalized score statistic = 6.60 df = 1, p = .0102