All students in the selected classrooms were invited
to participate in the study. Students were informed
of their right to participate and were assured that
their grades in health education were not contingent
on their participation. Informed consent was
obtained from participating students and their parents/
guardians before beginning the survey. Seven
students did not return consent and were not included
in the study. The resultant sample was composed of
441 students, of whom 413 (93.7%) provided complete
data.