Assessment of Depressive symptoms
Zung’s Self-Rating Depression Scale (SDS) was used [30]. The SDS
also considered both emotional and physical symptoms, including 20
items, of which 10 were negative experiences and 10 were positive
experiences. Add all the items together to form a rough score, which is
multiplied by 1.25 and rounded to get the standard score to evaluate
anxiety. The index score of 50 (original score=41) was set as the
cut-off point for clinical significant depression in our study [32].
The Cronbach’s alpha of it was 0.921 in this study.