Prevalence and risk factors of subjective sleepiness in the general adult population.
OBJECTIVE
The aim of this study was to investigate the prevalence and risk factors of self-reported excessive daytime sleepiness (EDS) in Norway.


METHODS
The Epworth Sleepiness Scale was administered by a telephone interview to a random sample of 2301 adult inhabitants of Norway. Questions of demography, symptoms of sleep disorders, and depression were included.


METHODS
Norway.


METHODS
Two thousand three hundred one subjects, 18 years and older.


METHODS
N/A.


RESULTS
The mean score of the Epworth Sleepiness Scale was 6.95 (SD = 3.8), and 17.7% had a score (> 10), indicating EDS. Univariate logistic regression analyses showed that being a man; living in southern Norway; working nights; being young; having symptoms of cataplexy, restless legs, or periodic limb movement in sleep; having breathing pauses in sleep; and having symptoms of depression were significantly related to EDS. Of these 9 predictors, only symptoms of restless legs did not maintain the significant relationship with EDS when a multiple logistic regression analysis was performed.


CONCLUSIONS
The prevalence of EDS was high in this adult Norwegian population sample. EDS seems to be related to several symptoms of sleep disorders.
Pallesen
Ståle
S
Department of Psychosocial Science, University of Bergen, Norway. staale.pallesen@psysp.uib.no
Nordhus
Inger Hilde
IH
Omvik
Siri
S
Sivertsen
Børge
B
Tell
Grethe S
GS
Bjorvatn
Bjørn
B
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D006970:Disorders of Excessive Somnolence / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D009664:Norway; D012044:Regression Analysis; D012307:Risk Factors