title: Examination of accuracy of sleep stages by means of an automatic sleep analysis system 'Sleep Ukiha'.
abstract: We examined the differences between the results of an automatic sleep analysis system and inspection decision. Subjects were 10 males (average age 21.6 years). One section consists of 20 s records. The sections that deviated from the algorithm could not be decided. Each sleep stage decided by automatic analysis was compared with the inspection decision. The agreement ratio of stage 3 was 91.6% in the highest, and followed by stage 2, stage 4, stage W and stage 1. The lowest was 62.5% for movement time. The total agreement ratio was 85.8%. The agreement ratios of the apnea index (AI) and the apnea hypopnea index (AHI) were relatively high, but for types of sleep apnea, agreement ratios require improvement.
authors: Department of Neuropsychiatry, Kurume University School of Medicine, Fukuoka, Japan. yujih@med.kurume-u.ac.jp
authors: Y
authors: Y
authors: Hashizume
authors: H
authors: H
authors: Kuwahara
authors: N
authors: N
authors: Uchimura
authors: M
authors: M
authors: Mukai
authors: S
authors: S
authors: Shirakawa
authors: T
authors: T
authors: Satomura
authors: N
authors: N
authors: Takeuchi
authors: J
authors: J
authors: Tanaka
authors: H
authors: H
authors: Maeda
mesh_terms: D000328:Adult; D004569:Electroencephalography / Q000295:instrumentation* / Q000592:standards*; D004867:Equipment Design; D006801:Humans; D008297:Male; D012891:Sleep Apnea Syndromes / Q000175:diagnosis; D012894:Sleep Stages / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology; D013997:Time Factors