Article

OBJECTIVES: To examine the dimensionality of the Wheelchair Use Confidence Scale
for power wheelchair users (WheelCon-P), to identify items that do not fit the
Rasch rating scale model as well as redundant items for elimination, and to
determine the SEMs and reliability estimates for the entire range of
measurements. DESIGN: Secondary analysis of cross-sectional data. SETTING:
Community. PARTICIPANTS: Volunteer participants (N=189) using wheelchairs (mean
age of the sample, 56.7+/-13.0y; mean years of wheelchair use experience,
20.4+/-16.4). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: 59-Item
WheelCon-P. RESULTS: Principal component analyses confirmed the presence of 2
self-efficacy dimensions: mobility and social situation. Eleven mobility items
and 5 social situation items fit the Rasch rating scale model. Three items misfit
the model using all 16 items (ie, WheelCon-P short form). In each of the
mobility, social situation, and WheelCon-P short form range of measurements, the
2 lowest and 2 highest measures had internal consistency reliability estimates
below .70; all other measures had reliability estimates above .70. CONCLUSIONS:
The WheelCon-P is composed of 2 self-efficacy dimensions related to mobility and
social situations. The scores from the WheelCon-P short form and the 11-item
mobility and 5-item social situation dimensions using a 0 to 10 response scale
have good reliability.
CI - Copyright (c) 2017 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS