SUBJECTS AND METHODOLOGY
Subjects
Data were collected from 382 high school students
from May to June of 2008. Stratified and random
sampling from three different schools of a rural
Greek area (Nea Moudania, Halkidiki) was applied.
Validated responses were obtained from a total of 350
adolescents (161 boys, 46% and 189 girls, 54%), aged
12-18 years. Adolescents were further divided into
two age groups: younger adolescents (12-14 years)
attending the Greek “gymnasium” (first three classes
of high school) and older adolescents (15-18 years),
attending the Greek “lyceum” (last three classes of
high school).