Design and participants
The current study is a cross-sectional survey conducted
during MarchApril, 2010 in Riyadh, the capital city of
Saudi Arabia. All of the participants are Saudi girls, aged
1329 years, school or college students, and living in
Riyadh, and they were randomly selected. The adolescent
girls (1318 years) were recruited from the intermediate
and secondary school complex in Princess Nourah Bint
Abdulrahman University, whereas the young adult girls
(1929 years) were recruited from the campus of Princess
Nourah Bint Abdulrahman University. One hundred and
ninety-six girls agreed to participate in this study after
obtaining a written consent in accordance with the
Helsinki Declaration. The study was approved by the
Nutrition and Food Science Department, College of
Home Economics, Princess Nourah Bint Abdulrahman
University, Riyadh, Saudi Arabia.