Table 1.

Frequency distribution of participants by sociodemographic characteristics (n=384).

Participants	Sex		Age (years)			Grade of study			School
	Male	Female	12	13	14	6th	7th	8th	1	2	3	4
n	178	206	95	160	129	167	96	121	81	95	108	100
%	46.4	53.6	24.7	41.7	33.6	43.5	25.0	31.5	21.1	24.7	28.1	26.0

n: number; %: percentage.