Table 3. Students' health knowledge, hygiene practices and health outcomes (N = 1,247).

Variable	Schools with the SHN project				Schools without the SHN project
	N	Mean		SD	N	Mean		SD	p-value
Health knowledge ‡	581	7.40		2.1	612	7.80		1.7	<0.001
		N	%		N		%	p-value
Hygiene practices
During the past 30days, how often did you wash your hands before eating? †
Never to many times		272	45.1		317		49.2	0.146
Always		331	54.9		327		50.8
During the past 30days, how often did you wash your hands after using the toilet or latrines? †
Never to many times		136	22.6		152		23.6	0.661
Always		467	77.4		492		76.4
During the past 30 days, how often did you use soap when washing your hands? †
Never to many times		302	50.1		338		52.8	0.396
Always		301	49.9		306		47.5
How often do you brush your teeth? †
≤ One time per day		247	41.0		293		45.7	0.096
≥ Two times per day		355	59.0		348		54.3
Health outcomes
How often did you have a toothache because of your teeth? †
Sometimes to always		291	48.6		305		47.7	0.745
Never		308	51.4		335		52.3
Did you suffer from diarrhea or dysentery within past one month? †
Yes		113	18.9		151		23.7	0.038
No/ Don’t know		485	81.1		485		76.3
Did you suffer from worm infestation within past one month? †
Yes		86	14.4		140		22.1	0.001
No/ Don’t know		501	85.6		493		77.9

†, Chi-square test

‡, T-test