Ze Lu1,2, Joshua I Vincent2,3, Joy C MacDermid1,2,3. 1. School of Rehabilitation Science, McMaster University, Hamilton, Ontario, Canada. 2. Roth McFarlane Hand and Upper Limb Centre, St. Joseph's Hospital, London, Ontario, Canada. 3. School of Physical Therapy, Western University, London, Ontario, Canada.
Abstract
OBJECTIVE: To use Rasch analysis to examine the measurement properties of the 23-item version of the Work Instability Scale (WIS-23) in a sample of worker compensation claimants with upper extremity disorders. DESIGN: Secondary data analysis on the data retrieved from a cross-sectional study. SETTING: Tertiary care hospital. PARTICIPANTS: Patients (N=392) attending a specialty clinic for workers with upper limb injuries at a tertiary hospital were prospectively enrolled. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: WIS-23. RESULTS: The study sample contained 392 participants between the ages of 19 and 73 years (mean, 47.0±10.5y). There were 148 (37.8%) women, 182 (46.4%) men, and 62 (15.8%) participants for whom sex identification was unavailable. The initial WIS data analysis showed significant misfit from the Rasch model (item-trait interaction: χ2=293.52; P<.0001). Item removal and splitting were performed to improve the model fit, resulting in a 20-item scale that met all assumptions (χ2=160.42; P=.008), including unidimensionality, local independence of items, and the absence of differential item function based on age, sex of respondents, employment type, and affected upper extremity area across all tested factors. CONCLUSION: With the application of Rasch analysis, we refined the WIS-23 to produce a 20-item WIS for work-related upper extremity disorders (WIS-WREUD). The 20-item WIS-WREUD demonstrated excellent item and person fit, unidimensionality, acceptable person separation index, and local independency. The WIS-20 may provide better measurement properties, although longitudinal psychometric evaluations are needed.
OBJECTIVE: To use Rasch analysis to examine the measurement properties of the 23-item version of the Work Instability Scale (WIS-23) in a sample of worker compensation claimants with upper extremity disorders. DESIGN: Secondary data analysis on the data retrieved from a cross-sectional study. SETTING: Tertiary care hospital. PARTICIPANTS: Patients (N=392) attending a specialty clinic for workers with upper limb injuries at a tertiary hospital were prospectively enrolled. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: WIS-23. RESULTS: The study sample contained 392 participants between the ages of 19 and 73 years (mean, 47.0±10.5y). There were 148 (37.8%) women, 182 (46.4%) men, and 62 (15.8%) participants for whom sex identification was unavailable. The initial WIS data analysis showed significant misfit from the Rasch model (item-trait interaction: χ2=293.52; P<.0001). Item removal and splitting were performed to improve the model fit, resulting in a 20-item scale that met all assumptions (χ2=160.42; P=.008), including unidimensionality, local independence of items, and the absence of differential item function based on age, sex of respondents, employment type, and affected upper extremity area across all tested factors. CONCLUSION: With the application of Rasch analysis, we refined the WIS-23 to produce a 20-item WIS for work-related upper extremity disorders (WIS-WREUD). The 20-item WIS-WREUD demonstrated excellent item and person fit, unidimensionality, acceptable person separation index, and local independency. The WIS-20 may provide better measurement properties, although longitudinal psychometric evaluations are needed.
Authors: Cheryl Koopman; Kenneth R Pelletier; James F Murray; Claire E Sharda; Marc L Berger; Robin S Turpin; Paul Hackleman; Pamela Gibson; Danielle M Holmes; Talor Bendel Journal: J Occup Environ Med Date: 2002-01 Impact factor: 2.162
Authors: Kenneth Tang; Dorcas E Beaton; Diane Lacaille; Monique A M Gignac; Wei Zhang; Aslam H Anis; Claire Bombardier Journal: Qual Life Res Date: 2010-04-25 Impact factor: 4.147
Authors: Gill Gilworth; Amy Carey; Sophie Eyres; John Sloan; Bruce Rainford; Debra Bodenham; Vera Neumann; Alan Tennant Journal: Brain Inj Date: 2006-07 Impact factor: 2.311
Authors: Sandra H van Oostrom; Maurice T Driessen; Henrica C W de Vet; Renée-Louise Franche; Eva Schonstein; Patrick Loisel; Willem van Mechelen; Johannes R Anema Journal: Cochrane Database Syst Rev Date: 2009-04-15
Authors: Wen-Hung Chen; William Lenderking; Ying Jin; Kathleen W Wyrwich; Heather Gelhorn; Dennis A Revicki Journal: Qual Life Res Date: 2013-08-03 Impact factor: 4.147
Authors: Linda Koopmans; Claire M Bernaards; Vincent H Hildebrandt; Stef van Buuren; Allard J van der Beek; Henrica C W de Vet Journal: J Appl Meas Date: 2014
Authors: Gill Gilworth; M Anne Chamberlain; Andrew Harvey; Amanda Woodhouse; Jacqui Smith; M Glyn Smyth; Alan Tennant Journal: Arthritis Rheum Date: 2003-06-15
Authors: Alina Cosma; András Költő; Yekaterina Chzhen; Dorota Kleszczewska; Michal Kalman; Gina Martin Journal: Int J Environ Res Public Health Date: 2022-08-09 Impact factor: 4.614