Sakakibara Brodie M, Miller William C, Rushton Paula W, Polgar Jan Miller
Faculty of Health Sciences, Simon Fraser University, Vancouver, British Columbia, Canada; Department of Physical Therapy, University of British Columbia, Vancouver, British Columbia, Canada; Rehabilitation Research Program, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.
Rehabilitation Research Program, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada; Department of Occupational Therapy and Occupational Sciences, University of British Columbia, Vancouver, British Columbia, Canada.
Arch Phys Med Rehabil. 2018 Jan;99(1):17-25. doi: 10.1016/j.apmr.2017.09.004. Epub 2017 Sep 28.
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.
Secondary analysis of cross-sectional data.
Community.
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).
Not applicable.
59-Item WheelCon-P.
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.
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.
检验电动轮椅使用者的轮椅使用信心量表（WheelCon-P）的维度，识别不符合拉施克评分量表模型的条目以及多余的待删除条目，并确定整个测量范围内的标准误和信度估计值。
横断面数据的二次分析。
社区。
使用轮椅的志愿者参与者（N = 189）（样本的平均年龄为56.7±13.0岁；轮椅使用经验的平均年限为20.4±16.4年）。
不适用。
59个条目的WheelCon-P。
主成分分析证实存在2个自我效能维度：移动性和社交状况。11个移动性条目和5个社交状况条目符合拉施克评分量表模型。使用所有16个条目（即WheelCon-P简表）时，有3个条目不符合该模型。在移动性、社交状况以及WheelCon-P简表的每个测量范围内，最低的2个测量值和最高的2个测量值的内部一致性信度估计值低于0.70；所有其他测量值的信度估计值高于0.70。
WheelCon-P由与移动性和社交状况相关的2个自我效能维度组成。使用0至10评分量表的WheelCon-P简表以及11个条目的移动性维度和5个条目的社交状况维度的得分具有良好的信度。
