Table 1.

Socio-demographic characteristics of respondents

Variable	n	%
Sex
Male	243	44.7
Female	301	55.3
Age*
< 15 years	302	55.5
≥ 15 years	242	44.5
School
Public school	456	89.9
Private school	51	10.1
School class
Senior secondary 1	176	32.4
Senior secondary 2	238	43.8
Senior secondary 3	130	23.9

*mean age: 15.3 ± 1.6 years