title: Responsiveness, minimal importance difference and minimal detectable change scores of the shortened disability arm shoulder hand (QuickDASH) questionnaire.
abstract: The aim of this study was to determine the responsiveness, Minimal Important Difference (MID) and Minimal Detectable Change (MDC) scores of the shortened Disability Arm Shoulder Hand (QuickDASH) questionnaire. Participants (n = 35) were recruited from private physiotherapy practices. Participants completed the QuickDASH questionnaire on two occasions; the first prior to treatment and the second at discharge or at six weeks post baseline, whichever event occurred first. The participants also completed a Global Change in Status Questionnaire (GSCQ). Responsiveness across treatment to discharge or at six weeks post initial visit was analysed by calculating the Effect Size (ES) and Standardised Response Mean (SRM). The MID was calculated using an anchor based approach and the MDC score was based upon calculations of the standard error of measurement (SEM). The results indicated that responsiveness was high (ES = 1.02, SRM = 1.1). The MID was 19 points while the MDC was 11 points. These results provide evidence that the QuickDASH is a responsive instrument when utilised in patients seen in private practice over a typical treatment interval.
authors.affiliation: Health and Rehabilitation Research Centre, School of Rehabilitation and Occupation Studies, Auckland University of Technology, Private Bag 92006 Auckland 1020, New Zealand.
authors.forename: Kate
authors.initials: K
authors.lastname: Polson
authors.forename: Duncan
authors.initials: D
authors.lastname: Reid
authors.forename: Peter J
authors.initials: PJ
authors.lastname: McNair
authors.forename: Peter
authors.initials: P
authors.lastname: Larmer
mesh_terms: D000328:Adult; D000368:Aged; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011331:Private Practice; D011594:Psychometrics; D015203:Reproducibility of Results; D020069:Shoulder Pain / Q000503:physiopathology*; D011795:Surveys and Questionnaires