Reliability and validity tests of the Stroke Aphasic Depression Questionnaire Hospital Version in patients with poststroke aphasia

Abstract

Objective To establish a standardized stroke aphasic depression questionnaire hospital version （SADQ-H） in Chinese and to evaluate its reliability and validity in the application in patients with poststroke aphasia, Methads After acquiring the author＇s letter of attorney, we revised the English SADQ-H into Chinese version; the inpatients with poststroke aphasia who met the inclusion criteria were used as test group, and the patients without poststroke aphasia were used as control group; after evaluating the Aphasia Battery of Chinese （ABC）, the test group was redivided into an auditory comprehension disorder group and a non-anditory comprehension disorder group; and all patients were assessed with SADQ-H by the trained health care workers. The patients in the non-auditory comprehension disorder group were evaluated by the Hamilton depression rating scale （HAMD） and the Beck Depression Inventory （BDI）. SADQ-H was retested in some patients 1 week later. Results The reliability test showed that the retested reliability was 0. 840, and internal consistency reliability Cronbach＇s α coefficient was 0. 78; the validity test showed that the criterion validities were 0. 590 （HAMD as criterion） and 0. 495 （BDI as criterion）. The accumulated variance contribution rate from factors of construct validity was 77. 123%. The discriminant validity was 2. 078. Conclusions The SADQ-H in Chinese has favorable reliability and validity, and it can be used as an effective tool in the assessment of depression in patients with poststroke aphasia in China. Key words: depression; aphasia; stroke