… Our goal in this report is to expand the previous epidemiological observations … sleep
disturbance and psychiatric disorders. Using data from a longitudinal epidemiological study of …

… study were to estimate the prevalence of sleep disturbance and sleep related daytime impairment
… of habitual physical activity in epidemiological studies. Am J Clin Nutr 1982;36: 93642. …

… have clinically defined insomnia; in epidemiological studies, results are consistent with our
… We do not have information on sleep disorders such as sleep apnoea or sleep medication …

… in the current study to be associated with sleep disorders) is … disorders, we also observed
significant associations of sleep … epidemiological study of young adults. Biol Psychiatry 1996;…

… We already know quite a lot about the prevalence of different sleep disorders, but many
more prospective longitudinal studies and genetic epidemiological studies are needed. Such …

… to identify longitudinal epidemiological studies … Studies were only considered when “sleep
problems” were defined as difficulties in initiating/maintaining sleep or non-restorative sleep …

… longitudinal, cohort study using postal questionnaires at baseline and 12-month follow-up.
Sleep problems … as having at least 1 of the sleep problems “on most nights.” Questions about …

… 3) Seasonal or transitional forms of insomnia and excessive sleepiness need to be
examined and 4) longitudinal epidemiological studies on the evolution and consequences of …

… , many cross-sectional epidemiological studies have indicated a … study, we used
epidemiological tools with verified validity and reliability to conduct a 2-year longitudinal survey of …

… states (non-case, recovered, onset, repeatedly depressive) by combining responses to the
measures (scoring four or more on seven items from the Center for Epidemiological Studies …