Adolescent School Absenteeism and Service Use in a Population-Based Study Kristin Gärtner Askeland, Siren Haugland, Kjell Morten Stormark, Tormod Bøe, Mari Hysing January 2015 Cite DOI adolescence school absence school refusal service use truancy youth@hordaland background Related Psychometric Properties and Concurrent Validity of the Crafft among Norwegian Adolescents. Ung@hordaland, a Population-Based Study Sleep and School Attendance in Adolescence: Results from a Large Population-Based Study.