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Updated: Jun 24, 2026

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
Published on: April 26, 2024
Obstructive sleep apnea (OSA) and depressive symptoms
Michele Dominici1, Marleide da Mota Gomes
1Division of Neurophysiologic Clinics - Epilepsy Program of Neurological Institute/Federal University of Rio de Janeiro, RJ, Brazil. micheledominici@gmail.com
This study found no causal link between obstructive sleep apnea (OSA) severity and depressive symptoms in adults without prior mental health conditions or medication use.
Area of Science:
- Sleep Medicine
- Psychiatry
- Clinical Research
Background:
- The association between obstructive sleep apnea (OSA) and depressive symptoms remains unclear in existing medical literature.
- Previous studies have yielded conflicting results regarding the relationship between sleep disturbances and mood disorders.
Purpose of the Study:
- To determine if a correlation exists between the severity of obstructive sleep apnea (OSA) and the presence of depressive symptoms.
- Investigating the potential link between sleep apnea severity and psychological well-being in adult patients.
Main Methods:
- A retrospective, cross-sectional study analyzed data from 123 adult patients evaluated for OSA.
- Patients with pre-existing mental illness or psychotropic drug use were excluded.
- Statistical analyses included univariate and multivariate models using Beck Depressive Inventory (BDI), Epworth Sleepiness Scale (ESS), Body Mass Index (BMI), and Apnea-Hypopnea Index (AHI) scores.
Main Results:
- Univariate analysis revealed a weak, statistically significant negative correlation between depressive symptoms (BDI) and OSA severity (AHI).
- However, multivariate logistic regression analysis indicated that this inverse relationship between AHI and BDI was not statistically significant.
- The findings suggest that initial correlations may be influenced by other confounding factors.
Conclusions:
- No causal relationship was established between obstructive sleep apnea (OSA) and depressive symptoms in the studied adult population.
- The results indicate that OSA severity does not directly predict the presence of depressive symptoms in individuals without prior mental health issues.
- Further research may be needed to explore potential indirect links or confounding variables.
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