ATLANTA, GA — May 20, 2002 —
People with sleep-disordered breathing (SDB) are three times more likely to have depression as a result.
“While it’s been held that they’re related, until now there is really very little data in the general population,” said Dr. Terry Young from the University of Wisconsin Medical School, Madison, Wisconsin, United States.
Dr. Young and colleagues presented their findings here Sunday at ATS 2002, the American Thoracic Society’s 98th International Conference In Atlanta, May 17-22. Based on overnight in-laboratory polysomnography sleep studies conducted on 1320 men and women, the researchers used the Apnea-hypopnea Index (AHI, calculated in events/hour) as an indicator of SDB severity.
Of the original subjects, 805 took part in a second sleep study. Depression was assessed by current use of antidepressant medications and the 20-item Zung Self-rating Depression Scale –a widely used population-based tool modified for sleepiness.
The study defined depression as a Zung score of 50 or more out of a possible 100. Severe depression was defined as Zung score of 60 or higher or use of antidepressants.
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