The aim of this investigation was to study the geographic variation in sleep complaints and to identify risk factors for sleep disturbances in three European countries : Iceland (Reykjavik), Sweden (Uppsala and Göteborg) and Belgium (Antwerp).
The study involved a random population of 2,202 subjects (age 20-45 years) who participated in the European Community Respiratory Health Survey.
The subjects answered a questionnaire on sleep disturbances.
Participants in Iceland and Sweden also estimated their sleep habits and sleep times during a period of 1 week in a sleep diary.
Habitual difficulties inducing sleep (DIS) were reported by 6-9% and early morning awakenings by 5-6% of the subjects.
The estimated number of awakenings and the prevalence ofnightmares was significantly lower in Reykjavik.
Participants in Reykjavik went to bed at night and woke in the morning approximately I hour later than participants at the Swedish centers.
Symptoms of gastroesophageal reflux (GER) were associated with DIS (odds ratio [OR]=2.7), nightmares, longer sleep latency and frequent nocturnal awakenings.
Smoking correlated positively to DIS (OR=1.8) and estimated sleep latency.
We conclude that the prevalence of DIS was fairly similar at these four European centers but that there was a variation in the prevalence of nightmares and nocturnal awakenings.
The significant correlation between reported GER and subjective quality of sleep should be followed up in studies using objective measurements.
Mots-clés Pascal : Insomnie, Trouble sommeil, Prévalence, Reflux gastrooesophagien, Tabagisme, Caféine, Cauchemar, Facteur risque, Variation saisonnière, Islande, Suède, Belgique, Adulte jeune, Vigilance, Epidémiologie, Iles Atlantiques, Europe, Homme
Mots-clés Pascal anglais : Insomnia, Sleep disorder, Prevalence, Gastroesophageal reflux, Tobacco smoking, Caffeine, Nightmare, Risk factor, Seasonal variation, Iceland, Sweden, Belgium, Young adult, Vigilance, Epidemiology, Atlantic Ocean Islands, Europe, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0531919
Code Inist : 002B30A01A2. Création : 01/03/1996.