Sleep in 40-45-year-olds in Hordaland county, Norway / Søvn hos 40-45 åringer i Hordaland
DOI:
https://doi.org/10.5324/nje.v16i2.188Abstract
This population-based cross-sectional study with self-administered questionnaires was conducted as part of the Hordaland Health Study ‘97-‘99 in collaboration with the Norwegian National Health Screening Service. The present paper is a revised and abbreviated version of a report on the study published in Sleep (1). A total of 8860 subjects aged 40-45 years answered the sleep questionnaire part of the study. Reports on habitual bedtimes, rise times, subjective sleep need and various sleep characteristics were used in this study. Mean (± standard deviation (SD)) nocturnal sleep duration during weekdays in men was 6h 52min (±55min); in women 7h 11min (±57min). Mean subjective sleep need was 7h 16min (±52min) in men; 7h 45min (±52min) in women. Sleep duration was shorter in shift workers and longer in married subjects and in those living in rural areas. In total the socioeconomic variables accounted for only around three per cent of the variance in sleep duration and sleep need. Ten per cent of the men and 12.2 per cent of the women reported frequent insomnia. The wide distribution of sleep duration and subjective sleep need indicate large inter-individual variations in these parameters. There were pronounced gender differences in these variables and in most of the sleep characteristics studied
Denne studien var en del av Hordalandsundersøkelsen ‘97-’99 som var en populasjonsbasert tverrsnittsstudie og ble utført i samarbeid med Statens Helseundersøkelser. Her presenteres en revidert og forkortet utgave av en rapport som ble publisert i tidsskriftet Sleep i 2005 (1). Totalt 8860 personer mellom 40 og 45 år besvarte spørreskjema med en rekke spørsmål om søvnvaner og søvnkarakteristika. Gjennomsnittlig nattlig søvnlengde (± standard deviation (SD)) var 6 timer 52 min (±55min) for menn, 7 timer 11 min (±57min) for kvinner, variasjonsbredden for begge kjønn var fra 3 til 11 timer. På fridager sov begge kjønn 1 time lenger enn på arbeidsdager. Gjennomsnittlig subjektivt søvnbehov var 7 timer 16 min (±52 min) for menn og 7 timer 45 min (±52 min) for kvinner. Søvnlengden var signifikant kortere hos skiftarbeidere og lengre hos gifte/samboende og hos de som bodde i landlige områder. Totalt sett forklarte de sosioøkonomiske variablene bare ca. tre prosent av variansen i søvnlengde og søvnbehov. Ti prosent av mennene og 12 prosent av kvinnene rapporterte søvnløshet minst en gang per uke. Den brede distribusjonen av søvnlengde og subjektivt søvnbehov viser at det er store interindividuelle variasjoner i disse parametrene. Det var klare kjønnsforskjeller i disse variablene og i de fleste søvnkarakteristika som ble studert
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