Table 1. Prevalence of field grade of trachoma by the characteristics of the sample of children ages 1–9 years in Kongwa District, Tanzania.

Characteristic		N (% of Total)	N TF(+)	% Prevalence	P-value
Age	1–3	773 (32.2%)	81	10.5%	<0.0001
	4–6	837 (34.9%)	62	7.4%
	7–9	791 (32.9%)	27	3.4%
Sex	Female	1219 (50.8%)	87	7.1%	0.9146
	Male	1182 (49.2%)	83	7.0%
Total		2401	170	7.1%	-