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Browsing by Author "Cederlöf, Erik Vilhelm"

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  • Cederlöf, Erik Vilhelm (2020)
    IMPORTANCE: We lack information regarding the prevalence of sleep problems among patients with psychotic disorders and, furthermore, their clinical significance and relation to subjective health. DESIGN, SETTING, AND PARTICIPANTS: The study is based on the SUPER study sample. 10 473 Finnish patients with a psychotic disorder were asked in a questionnaire about their sleep, and these results were compared to a nationally representative sample of the Finnish population from the Health 2000 survey (N=8018). MAIN OUTCOMES AND MEASURES: The main measures were total sleep duration (TSD), difficulties initiating sleep (DIS), early morning awakenings (EMA), and fatigue (FAT). Long sleep duration (Long SD) was defined as ≥10 hours, and short sleep duration (short SD) as ≤6 hours. RESULTS: Generally, the patients with psychotic disorders had more sleep problems (DIS in 30.2% of patients, 7.1% of controls). Long SD was the most deviating property of the sleep characteristics, especially among young patients with schizophrenia (p<.001, OR=27.9, CI=22.1-35.2, 47.4% in patients, 3.3% in controls). All sleep problems were associated with worse subjective health. We also conducted a latent class analysis, resulting in a relatively sleep problem-free cluster (58% of patients), an insomnia symptom cluster (26%), and a hypersomnia symptom (15%) cluster. CONCLUSIONS AND RELEVANCE: Patients with psychotic disorders have an increased prevalence of sleep problems compared to the general population but the prevalence varies in diagnostic, gender and age groups. The association between sleep problems and worse subjective health underscores the importance of an assessment of various sleep symptoms and their treatment in these patients.