Deborah L Snell1,2, Richard J Siegert3, Noah D Silverberg4,5,6. 1. Concussion Clinic, Canterbury District Health Board, Christchurch, New Zealand. 2. Department of Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago Christchurch, Christchurch, New Zealand. 3. Faculty of Health and Environmental Studies, AUT University, Auckland, New Zealand. 4. Division of Physical Medicine & Rehabilitation, University of British Columbia, Vancouver, Canada. 5. Rehabilitation Research Program, GF Strong Rehab Centre, Vancouver, Canada. 6. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts, USA.
Abstract
In this study we examined the psychometric properties of the World Health Organization Disability Assessment Schedule (WHODAS 2.0 12-item version) in a mild traumatic brain injury (MTBI) sample.Materials and Methods: Treatment-seeking adults (n = 131) with MTBI recruited from outpatient clinics in Vancouver Canada, were assessed 1- and 3-months following clinic intake. Dimensionality, reliability, and differential item functioning of the WHODAS 2.0 were examined with Rasch analysis. Associations between change in WHODAS 2.0 scores and symptom, work and perceived improvement outcomes were examined. Results: Adequate fit to the Rasch model was achieved for 1-month follow-up assessment WHODAS 2.0 scores without altering the response format or item content [X2 (24, n = 130) = 21.2, p = .6]. The best model fit for 3-month follow-up assessment scores was achieved when two items (problems with dressing and washing) were combined [X2 (22, n = 115) = 20.9, p = .5]. Associations were evident between changes in WHODAS total Rasch scores and other outcome indicators such as return to productivity and percieved improvement.Conclusions: The WHODAS 2.0 (12-item version) is a psychometrically sound measure of functional outcome for adults seeking treatment following MTBI. Our table of ordinal to interval score conversions is recommended for future research examining MTBI outcomes.
In this study we examined the psychometric properties of the World Health Organization Disability Assessment Schedule (WHODAS 2.0 12-item version) in a mild traumatic brain injury (MTBI) sample.Materials and Methods: Treatment-seeking adults (n = 131) with MTBI recruited from outpatient clinics in Vancouver Canada, were assessed 1- and 3-months following clinic intake. Dimensionality, reliability, and differential item functioning of the WHODAS 2.0 were examined with Rasch analysis. Associations between change in WHODAS 2.0 scores and symptom, work and perceived improvement outcomes were examined. Results: Adequate fit to the Rasch model was achieved for 1-month follow-up assessment WHODAS 2.0 scores without altering the response format or item content [X2 (24, n = 130) = 21.2, p = .6]. The best model fit for 3-month follow-up assessment scores was achieved when two items (problems with dressing and washing) were combined [X2 (22, n = 115) = 20.9, p = .5]. Associations were evident between changes in WHODAS total Rasch scores and other outcome indicators such as return to productivity and percieved improvement.Conclusions: The WHODAS 2.0 (12-item version) is a psychometrically sound measure of functional outcome for adults seeking treatment following MTBI. Our table of ordinal to interval score conversions is recommended for future research examining MTBI outcomes.
Authors: Noah D Silverberg; Thalia Otamendi; Penelope Ma Brasher; Jeffrey R Brubacher; Linda C Li; Pierre-Paul Lizotte; William J Panenka; Frank X Scheuermeyer; Patrick Archambault Journal: BMJ Open Date: 2022-06-21 Impact factor: 3.006
Authors: Jonathan Greenberg; Tanya Singh; Grant L Iverson; Noah D Silverberg; Eric A Macklin; Robert A Parker; Joseph T Giacino; Gloria Y Yeh; Ana-Maria Vranceanu Journal: JMIR Res Protoc Date: 2021-01-14
Authors: Lusine Vaganian; Sonja Bussmann; Maren Boecker; Michael Kusch; Hildegard Labouvie; Alexander L Gerlach; Jan C Cwik Journal: Qual Life Res Date: 2021-05-20 Impact factor: 4.147