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0314 NORMATIVE REFERENCES FOR THE SLEEP CONDITION INDICATOR: DERIVATIONS FROM A RANDOM SAMPLE OF 200,000 COMPLETERS

Sleep (New York, N.Y.), 2017-04, Vol.40 (suppl_1), p.A116-A116 [Peer Reviewed Journal]

Sleep Research Society 2017. Published by Oxford University Press [on behalf of the Sleep Research Society]. All rights reserved. For permissions, please email: journals.permissions@oup.com 2017 ;Sleep Research Society 2017. Published by Oxford University Press [on behalf of the Sleep Research Society]. All rights reserved. For permissions, please email: journals.permissions@oup.com ;ISSN: 0161-8105 ;EISSN: 1550-9109 ;DOI: 10.1093/sleepj/zsx050.313

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  • Title:
    0314 NORMATIVE REFERENCES FOR THE SLEEP CONDITION INDICATOR: DERIVATIONS FROM A RANDOM SAMPLE OF 200,000 COMPLETERS
  • Author: Luik, AI ; Farias Machado, P ; Carl, J ; Espie, CA
  • Subjects: Age ; Generalized linear models ; Insomnia ; Sleep
  • Is Part Of: Sleep (New York, N.Y.), 2017-04, Vol.40 (suppl_1), p.A116-A116
  • Description: Abstract Introduction: The Sleep Condition Indicator (SCI) was developed to screen for insomnia disorder based on DSM-5 criteria, and has been shown to have good psychometric properties. We gathered SCI data from a large sample of test completers to develop norm references to facilitate future use of the SCI in research and clinical settings. Methods: A random sample of 200,000 persons (58% women, mean age 32 ± 13 years) was selected from those who had completed the SCI via several internet platforms. The SCI consists of 8 items which are scored on a 0 to 4 scale (range 0–32). A higher score indicates better sleep. These cross-sectional data were analysed by sex, 10-year age bands, and DSM-5 criteria for Insomnia Disorder. Results: The mean score of the SCI for the overall population was 15.0 ± 5.9. Significant differences in distributions were observed by sex; women (14.3 ± 5.8) scoring lower than men (15.9 ± 5.9; Bootstrap Kolmogorov-Smirnov test: P<0.01). The analysis of 10-year age bands demonstrated a decreasing SCI score with age, with 18–30 year olds scoring a mean of 15.4 (± 5.7), and those older than 70 scoring a mean of 13.1 (± 5.8; Generalized Linear Model: -0.583 per 10-year increase in age, P<0.01). Those meeting criteria for possible DSM-5 insomnia disorder scored substantially lower (11.3 ± 4.0) than those who do not (19.1 ± 4.9; Bootstrap Kolmogorov-Smirnov test: P<0.01). Conclusion: This large dataset demonstrated that SCI scores are lower in women and in older populations. The availability of reference categories for age and sex will improve the usability of the SCI in clinical practice and in research studies. In addition, estimation of the minimal important difference on the SCI will be reported to establish the clinical significance of change associated with insomnia treatment. Support (If Any): This study supported by Big Health Ltd.
  • Publisher: US: Oxford University Press
  • Language: English
  • Identifier: ISSN: 0161-8105
    EISSN: 1550-9109
    DOI: 10.1093/sleepj/zsx050.313
  • Source: ProQuest One Psychology
    Alma/SFX Local Collection
    ProQuest Central
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