Table 1.

Characteristics of the study population of preschool children

		Dewormed (n=227 676)	Not dewormed (n=400 813)
Age (years)		2·8	2·3
Female sex		47·9%	48·6%
Male sex		52·1%	51·4%
Wealth quintile*		3·3	3·0
Children with mother's age of more than 30 years		60·0%	63·2%
Rural		66·9%	71·8%
Mother's education
	No education	24·9%	34·1%
	Some primary school education	22·4%	22·2%
	Completion of primary school or higher education	52·7%	43·7%
Improved drinking water source		73·1%	70·1%
Improved sanitation facility or toilet		55·2%	48·3%
Receipt of 3rd dose of DPT vaccine (% received)		80·1%	61·2%
Receipt of vitamin A in past 6 months		81·1%	45·7%

Data are n or %. DTP=diphtheria, tetanus, and pertussis.

^*Wealth quintiles are ordinal variables: 1, 2, 3, 4, 5.