Wilde, E.J. de

health problem study weight children model child adolescent factor sample weight status parent dif ficulties questionnaire internalizing problems gender status score scale internalizing questionnaire youth difference health indicators self-reported level invariance journal group body weight perception self-report rotterdam t 2 sample effect background factorial invariance adolescent psychiatry correlation self-reported weight status symptom psychiatry peer problems netherland school pupil result strength origin indicator country factorial anxiety report dutch analysis discrepancy depression t 1 sample turkish ficultie research association table perception year-old education youth health care discrepancy scores behaviour variate self-report sdq well-being fi ve-factor model prosocial behaviour factor prosocial height looij-jansen behavior subsample t 2 subsample obesity