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Electromagnetic fields have been suggested to contribute to the risk of depression by causing pineal dysfunction. Some epidemiologic studies have supported this possibility but have generally reported crude methods of exposure assessment and nonsystematic evaluation of depression. Using two available nationwide data sets, the authors identified from the(More)
To evaluate genetic influences on the use and abuse of alcohol, we compared questionnaire measures of the frequency, quantity, and density of social drinking, and the frequency of alcohol-induced passouts self-reported by 879 monozygotic (MZ) and 1940 dizygotic (DZ) pairs of twin brothers, aged 24-49 yr. The measures of frequency, quantity, and density(More)
OBJECTIVE To study the nature of the relationship of life events with depressiveness. METHOD In 1990, 9947 Finnish adult twins aged 33-60 years participated in a questionnaire study, with no missing data on the analysed variables. The relationship between stressful life-events and depressiveness, based on Beck Depression Inventory (BDI) classified as(More)
BACKGROUND Depression is associated with smoking, but the causality of the relationship is debated. The authors examine smoking behaviour as a predictor of depression among the Finnish adult twin population. METHOD Based on responses to surveys in 1975 and 1981, the authors characterized the subjects as never smokers, persistent former smokers, quitters,(More)
The association of self-reported hostility with morbidity and mortality due to external causes, including suicidal acts, was analyzed in 10,586 Finnish men and 10,857 Finnish women aged 24 to 59 years. Hostility was assessed from self-ratings on irritability, ease of anger-arousal, and argumentativeness. Three groups, low (33.6% of subjects), intermediate(More)
Relationships between psychiatric morbidity and interpersonal conflict at work among 15,530 Finnish employees aged 24 to 64 years were studied in a prospective follow-up: 4 years for all psychiatric hospitalizations, 5 years for suicide, and 6 years for long-term medication due to chronic psychosis. The association between interpersonal conflict at work and(More)
OBJECTIVE The purpose of this study is to compare whether students' learning outcomes would be better in a designed learning environment (WebCT) than in a conventional web site (WWW) with similar course material but without special learning tools. CONTEXT Third-year medical students in an introductory course on medical informatics at the University of(More)
This 6-year follow-up study investigates the impact of interpersonal conflict at work on work disability among 8,021 male and 7,327 female employees aged 24 to 65 years at baseline. Marital status, marital conflict, monotonous work, hectic work pace, hostility, neuroticism, life dissatisfaction, and experienced stress of daily activities were included in(More)
The Finnish Twin Cohort study (27,776 individuals; all twins of the same sex born before 1958 and alive in 1967) detected 316 cases of epileptic seizures occurring in 310 twin pairs: 89 monozygotic pairs and 221 dizygotic pairs, including three concordant monozygotic pairs and three concordant dizygotic pairs. The ratio of the observed to expected number of(More)
BACKGROUND To evaluate medical and dental students' utilization of electronic information resources. METHODS A web survey sent to 837 students (49.9% responded). RESULTS Twenty-four per cent of medical students and nineteen per cent of dental students searched MEDLINE 2+ times/month for study purposes, and thiry-two per cent and twenty-four per cent(More)