Listening to patients: using verbal data in the validation of the Aberdeen Measures of Impairment, Activity Limitation and Participation Restriction (Ab-IAP)

BMC Musculoskeletal Disorders

Research Article

Marie Johnston¹  Beth Pollard¹  Jeremy Horwood²  Salma Ayis³  Teresa McIlvenna⁴ 

[1] College of Life Sciences and Medicine, University of Aberdeen, UK;Department of Community Based Medicine and Clinical Science at North Bristol, University of Bristol, UK;Department of Public Health Sciences, King's College London, UK;University Hospitals Bristol NHS Foundation Trust, UK;

关键词: Item Response Theory;    Activity Limitation;    Response Shift;    Cognitive Interview;    Classical Test Theory;   

DOI  :  10.1186/1471-2474-11-182

 received in 2010-02-18, accepted in 2010-08-12,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundThe purpose of the study was to evaluate the validity of the self-administered Aberdeen Measures of Impairment, Activity Limitation and Participation Restriction (Ab-IAP): by investigating how participants interpret and respond to questions using the cognitive interviewing technique.MethodsTwenty patients with osteoarthritis of the knee or hip participated in a cognitive interview whilst completing the Ab-IAP. Interviews were conducted using the concurrent 'think aloud' design. All interviews were audio recorded and transcribed verbatim and analysed (i) using a standardised classification scheme to identify four types of response problems and (ii) thematically using the constant comparative technique.ResultsParticipants used various response strategies when answering questions about impairment, activity limitations and participation restriction. Problems were judged to be present in 3.1% of participants' responses for the item Ab-IAP. Thematic analysis provided insight into the type and nature of problems people experienced when completing the Ab-IAP measures. The problems identified were mainly comprehension and response problems.ConclusionsParticipants had minimal difficulties completing the Ab-IAP; however those difficulties identified have prompted suggestions for improving the measures. The cognitive interviews produced results that were compatible with statistical analysis of the measures.. Cognitive interviewing was beneficial for testing the validity and acceptability of new Ab-IAP measures. The results demonstrates that the Ab-IAP, in addition to being theoretically-based and having good psychometric properties, elicits appropriate responses.

【 授权许可】

CC BY   
© Horwood et al; licensee BioMed Central Ltd. 2010