改编OSSIQ测量不同主观皮肤类型人群生活质量的信度和效度分析

Analysis on reliability and validity of adaptation OSSIQ in measuring life quality of populatios with different types of subjective skin

目的:评价改编油性皮肤的自我形象问卷(OSSIQ)测量不同主观皮肤类型人群生活质量的信度和效度。方法:以分层抽样方法选择18~60岁在校大学生、工人、企事业机关人员140人为研究对象,进行改编OSSIQ现场调查,用内部一致性信度、折半信度、结构效度等考查该问卷的信度与效度。结果:改编OSSIQ的内部一致性信度为0.924和0.902。折半信度,皮肤护理前和护理后的Sepearman-Brown相关系数(r)均为0.877,Guttman Split-Half系数分别为0.876和0.874。内容效度,皮肤护理前和皮肤护理后改编OSSIQ的各条目得分与总分之间r>0.5(P<0.001)。聚合效度和区分效度定标实验成功率均为100%。用因子分析检验其结构效度,采取四次方最大正交旋转,按程序默认的因子提取原则,特征值>1提取因子,各因子由因子内因素负荷≥0.6的条目组成,因子负荷值皆属高程度(≥0.6)。结论:改编OSSIQ用于不同主观皮肤类型人群生活质量的评价具有非常好的信度和效度,可以用于评价不同主观皮肤类型生活质量的影响。

Objective：To evaluate the reliability and validity of the adaptation OSSIQ in measuring the life quality of the populations with different types of subjective skin.Methods：A stratified samplings strategy was adopted to select 140 college students,workers,personnel of enterprises and institutions aged 18-60 years old.The reliability and validity of adaptation OSSIQ were evealuated using internal consistency validity,split half reliability,and construct validity.Results：The adaptation OSSIQ had a Cronbach＇sαefficient of 0.924 and 0.902.Split half reliability,the Spearman-Brown before and after skin care were 0.877 and the Guttman Split-Half coefficients were0.876 and 0.874 respectively.Contentvalidity,the Item-scale correlation coefficients exceed 0.5（P〈0.001）before and after skin care.Satisfactory（100%）convergent validity and discriminant validity were found.The contract validity was checked by factor analysis;after quartimax rotation,the researcher extracted the factors by the default principle of eigenvalue〉1.Each factor consisted of the items with factor loading≥0.6;the load factor value belonged to high level（≥0.6）by factor analysis.Conclusion：Adaptation OSSIQ has good reliability and validity for the evaluation on life quality of the populations with different types of subjective skin.It can be used to evaluate the influence of different types of skin in the life quality.