HPRHealth Psychology ResearchTBA2420-8124Health Psychology Research10.4081/hpr.2014.1825General Impact on participation and  autonomy: test of validity and  reliability for older personshttps://healthpr.org/journal/HPR/2/3/10.4081/hpr.2014.1825HammarIsabelle Ottenvall,EkelundChristina,WilhelmsonKatarina,EklundKajsa2014232014-11-06In research and healthcare it is important to measure older persons’ self-determination in order to improve their possibilities to decide for themselves in daily life. The questionnaire Impact on Participation and Autonomy (IPA) assesses self-determination, but is not con structed for older persons. The aim of this study was to examine the validity and reliabil ity of the IPA-S questionnaire for persons aged 70 years and older. The study was performed in two steps; first a validity test of the Swedish version of the questionnaire, IPA-S, followed by a reliability test-retest of an adjusted ver sion. The validity was tested with focus groups and individual interviews on persons aged 77 88 years, and the reliability on persons aged 70-99 years. The validity test result showed that IPA-S is valid for older persons but it was too extensive and the phrasing of the items needed adjustments. The reliability test-retest on the adjusted questionnaire, IPA- Older per sons (IPA-O), showed that 15 of 22 items had high agreement. IPA-O can be used to measure older persons’ self-determination in their care and rehabilitation.impact on participation and autono my, occupational therapy, rehabilitation, self determination, test-retest

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