Validity of sleep log compared with actigraphic sleep-wake state II

Akira Usui, Yoshikazu Ishizuka, Ichio Obinata, Tamio Okado, Hitoshi Fukuzawa, Shigenobu Kanba

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Twenty-five young people (Y group), three elderly people and seven people with various sleep disorders (SD group) kept a sleep log for 2-7 days, and their wrist-activity was monitored simultaneously. The sensitivity and specificity of the sleep log, and the ratio of agreement between the sleep log and actigraphic sleep-wake state were calculated. The sensitivity and specificity in Y group were 87.93 ± 6.49% and 96.51 ± 2.37%, respectively. The sensitivity in SD group was significantly lower than in Y group. Even in Y group one-hour agreement ratios dropped during the sleep onset period.

Original languageEnglish
Pages (from-to)183-184
Number of pages2
JournalPsychiatry and clinical neurosciences
Issue number2
Publication statusPublished - Apr 1999

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Neurology
  • Clinical Neurology
  • Psychiatry and Mental health


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