SF-36量表在SARS康复人员中应用的信度和效度评价

Evaluation the reliability and validity of SF-36 scales used among healed SARS patients

【目的】评价SF-36量表用于SARS康复人员生活质量的信度和效度。【方法】对天津市SARS康复人员进行问卷调查,问卷由被调查对象自己填写。计算各条目得分,采用相关分析、Cronbach′sα系数和因子分析的方法分析信度和效度。【结果】SF-36问卷8个健康标度的Cronbach′sα系数都大于0.70;效度分析显示,8个标度的集合效度均达到100%,除总体健康(GH)外,其他各标度的区分成功率都大于90%。判别效度分析结果显示与理论推断结果一致。因子分析产生了2个主成分,解释了总方差的71.95%,分别代表生理健康和心理健康。【结论】SF-36问卷用于SARS康复人群信度和效度良好,适于对该人群的生命质量进行评价。

[Objective] To evaluate the reliability and validity of SF-36 Scales used in evaluating the quality of life for healed SARS patients. [Method] All the healed SARS patients in Tianjin city were investigated by SF-36 scales and answered by objects themselves. The score of items was analyzed. Reliability and validity of SF-36 were evaluated by correlation analysis, Cronbach＇s alpha coefficient and Factor analysis. [ Results] The Cronbach＇s alpha coefficient of 8 scales were above 0. 70. The output of validity analysis showed that the scaling success rates of convergent rates were 100% for all the 8 scales, and the scaling success rates of discriminant rates were above 90% except for GH scale. The actual results were consistent with theoretical inference, which proved that the SF-36 has preferable discriminatory validity. Factor analysis identified two principal components： a ＂physical＂ factor and a ＂mental＂ factor. Taken together, these two factors could be used to explain 71.95%of the total variance. [Conclusion] The reliability and validity of SF-36 scales were acceptable, when it was used to evaluate the life quality of healed SARS patients.