School of Nursing, Sun Yat-sen University, 74 Zhongshan Rd. 2, Guangzhou 510089, China.
Int J Nurs Stud. 2010 Feb;47(2):166-80. doi: 10.1016/j.ijnurstu.2009.05.023. Epub 2009 Jul 4.
Perceptions of exercise benefits and barriers affect exercise behavior. Because of the clinical course and treatment, dialysis patients differ from the general population in their perceptions of exercise benefits and barriers, especially the latter. At present, no valid instruments for assessing perceived exercise benefits and barriers in dialysis patients are available.
Our goal was to develop and test the psychometric properties of the Dialysis patient-perceived Exercise Benefits and Barriers Scale (DPEBBS).
A literature review and two focus groups were conducted to generate the initial item pool. An expert panel examined the content validity. Then, 269 Chinese hemodialysis patients were recruited by convenience sampling. Exploratory and confirmatory factor analyses were used to test construct validity. Finally, internal consistency and test-retest reliability were assessed.
The expert panel determined that the content validity index was satisfactory. The final 24-item scale consisted of six factors explaining 57% of the total variance in the data. Confirmative factor analysis supported the six-factor structure and a higher-order model. Cronbach's alpha was 0.87 for the total scale, and 0.84 for test-retest reliability.
The DPEBBS was a valid and reliable instrument for evaluating dialysis patients' perceived benefits and barriers to exercise. The application value of this scale remains to be investigated by increasing the sample size and evaluating patients undergoing different dialysis modalities and coming from different regions and cultural backgrounds.
对运动益处和障碍的认知会影响运动行为。由于临床病程和治疗，透析患者对运动益处和障碍的认知与一般人群不同，尤其是后者。目前，尚无评估透析患者感知运动益处和障碍的有效工具。
我们的目标是开发和测试透析患者感知运动益处和障碍量表（DPEBBS）的心理测量特性。
通过文献回顾和两个焦点小组生成初始项目池。专家小组审查了内容效度。然后，通过便利抽样招募了 269 名中国血液透析患者。采用探索性和验证性因子分析来检验结构效度。最后，评估了内部一致性和重测信度。
专家小组确定内容效度指数令人满意。最终的 24 项量表由六个因素组成，可解释数据总方差的 57%。验证性因子分析支持六因素结构和高阶模型。总量表的克朗巴赫α系数为 0.87，重测信度为 0.84。
DPEBBS 是评估透析患者对运动的感知益处和障碍的有效且可靠的工具。通过增加样本量并评估接受不同透析方式以及来自不同地区和文化背景的患者，可以进一步研究该量表的应用价值。
