农村空巢老人SF-36量表应用信度及效度评价

目的评价简明健康调查量表(SF-36)应用于农村空巢老人生存质量测量时的信度和效度。方法采用中文版SF-36量表,对江苏省徐州市分层整群随机抽取218名农村空巢老人进行面访调查,评价该量表的信度和效度。结果 SF-36量表的分半系数为0.84,生理职能(RP)、生理功能(PF)、躯体疼痛(BP)、总体健康(GH)、精力(VT)、社会功能(SF)、情感职能(RE)和精神健康(MH)8个维度Cronbach’sα系数为0.79、0.88、0.86、0.81、0.77、0.76、0.88、0.77,量表具有良好的分半信度和内部一致性信度;效度分析表明,集合效度和区分效度试验成功率分别为97.14%和97.96%,因子分析(RMSEA=0.12,CFI=0.91),PF、VT、RE、MH 4个维度在因子负荷上与理论模型完全一致;量表反应度评价表明,除RP、BP、SF 3个维度天花板效应分别为42.63%、48.79%、26.45%外,其他维度地板效应和天花板效应均不显著。结论 SF-36量表适用于农村空巢老人生存质量评价,但尚需根据实际情况对部分条目进行完善。

Reliability and validity of SF-36 in health survey among empty-nest elders in countryside

Objective To access the reliability and validity of 36-Item Short Form Health Survey(SF-36) in the evaluation of quality of life among the empty-nest elders in countryside.Methods Totally 218 empty-nest elders were selected with stratified cluster random sampling for a face-to-face interview with SF-36.The reliability of SF-36 was evaluated by split-half reliability and internal consistency reliability and its validity was evaluated by discriminant validity,convergent validity,and structure validity.Results The split-half reliability was 0.84 and the internal consistency Cronbach’α coefficient was 0.89.The Cronbach’s α coefficient for role-physical,physical functioning,bodily pain,general health,vitality,social funtioning,role-emotional,and mental health was 0.79,0.88,0.86,0.81,0.77,0.76,0.88,and 0.77,resectively.The convergent validity was 97.14% and discriminant validity was 98.21%.By confirmatory factor analysis,we got a model,of which the structure was consistent with the theoretical assumption,and two main statistics of root mean square error of approximation(0.12) and confirmatory fit index(0.91).Conclusion The results indicate that the SF-36 is a useful scale for the evaluation of the quality of life among the empty-nest elders in countryside.