OBJECTIVE: To evaluate the measurement properties of the Wheelchair Use Confidence Scale for manual wheelchair users version 2.1 (WheelCon-M 2.1). DESIGN: Cohort study. PARTICIPANTS: Volunteer sample of 83 community-dwelling, experienced manual wheelchair users. METHODS: Participants completed the WheelCon-M 2.1 twice to assess retest reliability. Validity was assessed by evaluating hypothesized relationships between the WheelCon-M 2.1 and relevant variables. Responsiveness was assessed using the standard error of measurement (SEM) and smallest real difference (SRD). RESULTS: The median (interquartile range) WheelCon-M 2.1 score was 84.6 (71.3-92.0) of a possible 0-100. The one-week retest intraclass correlation coefficient was 0.84 with 95% bias-corrected and accelerated confidence intervals of 0.77-0.90. Cronbach's alpha was 0.92. Correlations ranging from rs = -0.19 (p = 0.780) to rs = 0.58 (p < 0.001) were found between the WheelCon-M 2.1 and other relevant outcome measures with all correlations being statistically significant except for age (p = 0.780) and social support (p = 0.057). A statistically significant difference was not found between the sexes (p = 0.140). The SEM and SRM were 5.9 and 16.4, respectively. CONCLUSIONS: WheelCon-M 2.1 has high internal consistency, strong retest reliability, and support for concurrent validity, construct validity and responsiveness. This new test holds promise as a clinical and research tool.
OBJECTIVE: To evaluate the measurement properties of the Wheelchair Use Confidence Scale for manual wheelchair users version 2.1 (WheelCon-M 2.1). DESIGN: Cohort study. PARTICIPANTS: Volunteer sample of 83 community-dwelling, experienced manual wheelchair users. METHODS:Participants completed the WheelCon-M 2.1 twice to assess retest reliability. Validity was assessed by evaluating hypothesized relationships between the WheelCon-M 2.1 and relevant variables. Responsiveness was assessed using the standard error of measurement (SEM) and smallest real difference (SRD). RESULTS: The median (interquartile range) WheelCon-M 2.1 score was 84.6 (71.3-92.0) of a possible 0-100. The one-week retest intraclass correlation coefficient was 0.84 with 95% bias-corrected and accelerated confidence intervals of 0.77-0.90. Cronbach's alpha was 0.92. Correlations ranging from rs = -0.19 (p = 0.780) to rs = 0.58 (p < 0.001) were found between the WheelCon-M 2.1 and other relevant outcome measures with all correlations being statistically significant except for age (p = 0.780) and social support (p = 0.057). A statistically significant difference was not found between the sexes (p = 0.140). The SEM and SRM were 5.9 and 16.4, respectively. CONCLUSIONS: WheelCon-M 2.1 has high internal consistency, strong retest reliability, and support for concurrent validity, construct validity and responsiveness. This new test holds promise as a clinical and research tool.
Authors: R Lee Kirby; William C Miller; Francois Routhier; Louise Demers; Alex Mihailidis; Jan Miller Polgar; Paula W Rushton; Laura Titus; Cher Smith; Mike McAllister; Chris Theriault; Kara Thompson; Bonita Sawatzky Journal: Arch Phys Med Rehabil Date: 2015-07-30 Impact factor: 3.966
Authors: Krista L Best; William C Miller; Janice J Eng; François Routhier; Charles Goldsmith Journal: Can J Occup Ther Date: 2014-12 Impact factor: 1.614
Authors: W Ben Mortenson; Louise Demers; Paula W Rushton; Claudine Auger; Francois Routhier; William C Miller Journal: Arch Phys Med Rehabil Date: 2015-09-25 Impact factor: 3.966