Reliability and validity of the Social Impact Scale in measuring the stigma in stroke patients
Huang Chaojun
Li Qiaoling
Han Mei
Hu Xiaohong
Liu Xiaobo
Abstract：Objectives? To test the reliability and validity of the Chinese version of the Social Impact Scale (SIS) for the stigma of stroke patients in China, and to provide an effective tool for assessing the stigma of stroke patients. Methods? A total of 170 stroke patients who met the inclusion criteria were selected by the Rehabilitation Medicine Department of a tertiary hospital in Xi'an, Shaanxi Province. The Chinese version SIS was used to investigate the stigma. Using the degree of discrimination, coefficient of variation, and correlation analysis to analyze the scale items, Cronbach's alpha, content validity index, and exploratory factor analysis were used to evaluate the reliability, content validity, structural validity of the scale. The criterion-related validity is used to measure the correlation between social impact scale and daily activity ability, self-esteem, and depression. Results? A total of 170 questionnaires were distributed, and 164 valid questionnaires were returned. The response rate was 96.5%. The SIS can identify high and low groups (P＜0.01), the coefficient of variation of each item of the scale is over 15%, and the correlation coefficient between each dimension and total score of the scale is 0.739-0.875 (P＜0.01). The correlation coefficient between the score and the total score of the scale is 0.325-0.738 (P＜0.01). The results of the exploratory factor analysis retain 18 items, and one common factor is extracted for each dimension. The contribution of each common factor to variance is more than 45%. Finally, each dimension contained no less than three items, and the factor load is ＞ 0.60. The content validity index of each item of the scale is 0.875-1.000, and the content validity index of the scale is 0.944. The revised social impact scale consists of 4 dimensions and 18 items. The internal consistency of the total scale Cronbach's α coefficient is 0.908, and the Cronbach's α coefficients of each dimension are 0.711, 0.662, 0.840, 0.777, respectively. The correlation coefficient of each item is 0.457-0.783 (P＜0.01). The correlation coefficient of each dimension is 0.449-0.867 (P＜0.01). The revised SIS score was negatively correlated with daily activity ability and self-esteem score (r=-0.238, -0.309, P＜ 0.01), and positively correlated with depression score (r=0.537, P＜0.01). Conclusions? The revised SIS has ideal reliability and validity and can be used to evaluate the stigma in stroke patients in China.
Keywords：StrokeStigmaSocial Impact ScaleReliability and validityFactor analysis
Publication Date：2019-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 413-419 )