Data was used from the Icelandic part of the international study“ Health behavior in School-Aged Children, HBSC”, from the submission of the questionnaire to 10 th grade students in Iceland in the school year 2009-2010.
Notuð voru gögn úr íslenska hluta alþjóðlegu rannsóknarinnar „Heilsa og lífskjör skólanema“ (e. Health behavior in School-Aged Children; HBSC), úr fyrirlögn spurningalistans í 10. bekkjum landsins skólaárið 2009-2010.