Cross-Sectional Study of Obstructive Sleep Apnea Syndrome in Japanese Public Transportation Drivers: Its Prevalence and Association with Pathological Objective Daytime Sleepiness

This article reports on a cross-sectional study of obstructive sleep apnea syndrome (OSAS) in Japanese public transportation drivers, focusing on factors associated with a pathological level of objective daytime sleepiness. The study was part of a health check program for a public transportation company in Tokyo. The study included 2,389 Japanese male transit drivers who wore portable monitoring devices (PMD) for screening. In addition, nocturnal polysomnography (n-PSG) and multiple sleep latency tests (MSLT) were administered to participants whose PMD showed a with apnea-hypopnea index (AHI) of at least 15. The authors diagnosed 235 subjects (9.8%) as having OSAS. The study also used the Epworth Sleepiness Scale to evaluate awareness of excessive daytime sleepiness. Risk factors for a pathological level of daytime sleepiness included AHI on n-PSG at least 40 and Epworth Sleepiness Scale score at least 11. The authors conclude with a brief discussion of the potential impact of shift-work schedules, which were not factored into this research.


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  • Accession Number: 01611873
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 30 2016 2:11PM