慢性HBV感染者歧视测量量表简化版的研制

目的 研制并评价慢性HBV感染者歧视测量量表(the chronic hepatitis B virus infection-related stigma scale,HBVSS)简化版.方法 通过便利抽样的方法选取1058名慢性HBV感染者进行调查,随机抽取其中529名被试对象作为训练样本,用经典测量理论和项目反应理...

Development of a shortened version of the chronic hepatitis B virus infection-related stigma scale

  Objective  To develop and evaluate a shortened version of the chronic hepatitis B virus infection-related stigma scale (HBVSS).  Methods  A total of 1 058 people with chronic HBV-infections were administered by convenient sampling method in this study. The data of 529 subjects were randomly selected as a training sample for item screening by classical test theory and item response theory (IRT). The data of the remaining 529 subjects were used as a validation sample to evaluate the psychometric properties of the shortened version scale.  Results  2 better items remained within each dimension (perceived stigma dimension remained 4 items) of the original HBVSS, a shortened version HBVSS-12 was formed. Cronbach'α of HBVSS-12 was 0.670-0.856 for each dimension and 0.903 for the total scale. Confirmatory factor analysis showed acceptable goodness-of-fit (standardized root mean square residual=0.038, root mean square error of approximation=0.074, comparative fit index=0.958 and Tucker-Lewis index=0.937). IRT discrimination parameters were estimated to be 1.22-2.71 and difficulty parameters, -3.24-3.15. Average item information ranged from 0.413-1.711. Compared with the original scale, the average information of HBVSS-12 was reserved from 56.23%-82.72% for each dimension and 73.20% for the total scale.  Conclusion  The HBVSS-12 showed good reliability, validity, and item quality, making it simple and effective for assessing chronic HBV infection-related stigma.