Table 1: Distribution of study population according to age and gender.

Age (years)	Sex				Total
	Male		Female		–	–
	Number of Subjects	Percentage Distribution (%)	Number of Subjects	Percentage Distribution (%)	Number of Subjects	Percentage Distribution (%)
7-8	150	48.2	161	51.8	311	100
8-9	382	56.1	299	43.9	681	100
Total	532	53.6	460	46.4	992	100