Torstein Jørgensen

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A random sample of 4,807 men and women, aged 30, 40, 50, and 60 years, who lived in the western part of Copenhagen County, was drawn from the National Central Person Registry. A total of 226 subjects who were not of Danish origin were omitted. The response rate was 78.8% (3,608/4,581). Each person had his or her gallbladder examined by ultrasonography. The(More)
The incidence of migraine in a general population has been assessed in few longitudinal studies, and the incidence of tension-type headache has never been assessed. The authors aimed to assess the incidence of migraine and tension-type headache in Denmark by conducting a 12-year follow-up study of a general population (1989-2001). The design and methods of(More)
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