Epidemiology of Sleep Disorders in Primary School Students in Tehran

The aim of this project was to evaluate the frequency of sleep disorders in primary school students in the city of Tehran. In a descriptive cross-sectional study, parents of 692 primary school children completed a questionnaire binding child demographics,family structure, and sleep behaviors. Data were ana- lyzed by descriptive statistical methods, t-test, and c2 test. Sleep disorders were reported in 41.6% of primary school children. The most common disorder reportedly was bedtime resistance (20.7%). The occurrence of bedwetting was the only sleep disorder that was more frequent in boys than girls. Sleep disorder was reported more frequent- ly in children of housewife mothers than working mothers. The frequency of parasomnia was less in children of college-educated fathers. College education of mothers was negatively correlated with frequency of sleep terror disorder and nightmares.Sharing a bed,fear and worry before asleep, and having no specific bedtime were correlated with more sleep disorders. Sleep disorders are prevalent in primary school children in Tehran. The most common dis- order was bedtime resistance, which was mostly related with having no specific bedtime.