Psychometric Validation of a Culturally Specific Dementia Stigma Instrument for Chinese Populations

Purpose This study aimed to validate the psychometric properties of the simplified Chinese version of the Dementia Diagnosis Attitude Scale (DDAS) among the Chinese population. Method A total of 600 participants from China completed the study. Confirmatory factor analysis (CFA) was performed to examine the factor structure. Convergent and discriminant validity, concurrent validity, and known-group comparisons were assessed. Reliability was measured using internal consistency. Results The CFA found the two-factor model demonstrated satisfactory model fit. The simplified Chinese version of the DDAS showed significant correlations with two theoretically related constructs: social distance and perceived stigma. Known-group validity was confirmed by significant score differences across socio-demographic subgroups. Excellent internal consistency (Cronbach's α=0.94) demonstrates good reliability. Discussion The findings support the validity and reliability of the simplified Chinese version of the DDAS in the Chinese population, with strong cultural relevance.