Nonresponse bias due to consent procedures in school-based, health-related research
Engelsk titel: Nonresponse bias due to consent procedures in school-based, health-related research
Författare:
Klepp, Knut-Inge
Språk: Eng
Antal referenser: 10
Dokumenttyp:
Artikel
UI-nummer: 44571
Sammanfattning
Written, parental consent was solicited from parents of 517 seventh grade students in four junior high schools in Bergen, Norway for their children's participation in a longitudinal nutrition education study. Subject selection bias may represent a threat to the validity of studies using a written parental consent procedure.