Korean J Psychosom Med.  2022 Dec;30(2):137-144. 10.22722/KJPM.2022.30.2.137.

Relationship Between Sleep Quality and Depression Symptoms in Psychiatric Patients: Mediating Effect Interpretation Bias for Ambiguity and Anxiety Symptoms

• Lee H
• Kim E
• Choi J
• Park SC

• KMID: 2538675
• DOI: http://doi.org/10.22722/KJPM.2022.30.2.137

Abstract

Objectives
：This study was designed to investigate the effect of sleep quality on depression symptoms and the mediating effect of interpretation bias and anxiety symptoms in psychiatric patients.
Methods
：Data accumulated for outpatients and inpatients in the Department of Mental Health Medicine at Hanyang University Guri Hospital were used. The measurement tools were Pittsburgh Sleep Quality Index (PSQI), Ambiguous/Unambiguous Situations Diary-Extended Version (AUSD-EX), Beck Anxiety Inventory (BAI), Beck Depression Inventory-II (BDI-II). Correlation analysis and bootstrapping analysis were conducted using SPSS 25.0 and SPSS Macro based on 162 patient data.
Results
：As a result of the study, the double mediating effect of interpretation bias for Ambiguity and anxiety symptoms was significant in the relationship between sleep quality and depression symptoms.
Conclusions
：In this study, it was confirmed that low sleep quality sequentially affects anxiety and depression symptoms through interpretation bias for ambiguity. Based on this, it is expected that the development of other psychiatric symptoms can be prevented by preferentially performing therapeutic intervention on preceding symptoms.

Keyword

Sleep quality; Depression symptom; Interpretation bias for ambiguity; Anxiety symptom; Double mediated effect