Rehabilitation Sciences Graduate Program, University of British Columbia, T325 - 2211 Wesbrook Mall, Vancouver, British Columbia V6T 2B5, Canada.
J Rehabil Med. 2013 Jan;45(1):61-7. doi: 10.2340/16501977-1069.
To evaluate the measurement properties of the Wheelchair Use Confidence Scale for manual wheelchair users version 2.1 (WheelCon-M 2.1).
Cohort study.
Volunteer sample of 83 community-dwelling, experienced manual wheelchair users.
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).
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.
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.
评估改良版手动轮椅使用信心量表（WheelCon-M 2.1）的测量特性。
队列研究。
社区居住、经验丰富的手动轮椅使用者的志愿者样本，共 83 名。
参与者两次完成 WheelCon-M 2.1 以评估重测信度。通过评估 WheelCon-M 2.1 与相关变量之间的假设关系来评估有效性。使用测量误差（SEM）和最小实际差异（SRD）来评估反应度。
WheelCon-M 2.1 的中位数（四分位距）得分为 84.6（71.3-92.0），满分 100 分。一周后的重测组内相关系数为 0.84，95%置信区间的偏倚校正和加速为 0.77-0.90。克朗巴赫 α系数为 0.92。WheelCon-M 2.1 与其他相关结局测量之间的相关性范围从 rs=-0.19（p=0.780）到 rs=0.58（p<0.001），所有相关性均有统计学意义，除了年龄（p=0.780）和社会支持（p=0.057）。男女之间没有统计学差异（p=0.140）。SEM 和 SRM 分别为 5.9 和 16.4。
WheelCon-M 2.1 具有较高的内部一致性、较强的重测信度，且支持同时有效性、结构有效性和反应度。这个新的测试有望成为一种临床和研究工具。
