A single-center epidemiological and clinical retrospective study of 8 037 patients with sleep disorders

Abstract

Objective To assess the epidemiology and clinical characteristics of sleep disorders in a single center in northwest China. Methods Using the International Classification of Sleep Disorders, 3rd Edition, all consecutive patients which were suspected as sleep disorders in Tangdu Hospital between January 2007 and December 2016, were included retrospectively. Results The average age of 8 037 patients was (46.59±15.83) years with male-female ratio 1∶1.24. Chronic insomnia was found in 3 848 (47.9%) patients, obstructive sleep apnea was found in 2 648 (32.9%) patients, narcolepsy was found in 294 (3.7%) patients, Kleine-Levin syndrome was found in 11 (0.1%) patients, circadian rhythm sleep-wake disorders were found in 14 (0.2%) patients, rapid eye movement behavior disorder was found in 193 (2.4%) patients, restless legs syndrome was found in 139 (1.7%) patients, periodic limb movement disorder was found in 109 (1.4%) patients, and other possible sleep disorders were found in 478 (5.9%) patients, respectively. Chronic insomnia and obstructive sleep apnea combided with somatic diseases. Conclusions Patients diagnosed by polysomnography in our single center suggested consultation rate of sleep disorders was increasing in past ten years, of which chronic insomnia and obstructive sleep apnea were dominant and comorbided with somatic diseases. Key words: Sleep disorders; Retrospective study; Epidemiology