Validation Of Chinese Version Of The Stroke Aphasic Depression Questionnaire (SADQ)

Objective: The aim of the study was to translate SADQ into Chinese and assess the validity and reliability of Chinese edition of SADQ Methods: 105 stroke patients within 2 weeks after onset were assessed with Hamilton Depression Rating Scale (HAMD) and Beck Depression Inventory (BDI). While patients were completing these assessments, their carers were asked to complete the SADQ in respect to the patients. The SADQ was also administered to 30 carers on two occasions at a 2-week interval. Test-retest reliability was tested by correlation analysis. Internal consistency reliability were tested by Cronbach's αcoefficient and Guttman's split-half coefficient. Methods of factor analysis and correlation analysis were used to test the construct validity and criteria validity. Results: 105 patients participated in the study. Test-retest reliability(r=0.754,P<0.01) and internal consistency reliability (Cronbach's αcoefficient= 0.809, Guttman's split-half coefficient=0.743)were high. The structure validity was evaluated by factor analysis .We got seven factors that explain 65.641% of total variance. Results indicated that scores on the SADQ were significantly related to HAMD and BDI (r=0.548 to r=0.488, P<0.01). Conclusions: In a word, SADQ has good reliability and validity when applying on Chinese stroke patients. The Chinese version of the SADQ may be used to assess depression in aphasic stroke patients.