Exact(14)
Despite this, the wide scope of the HUNT studies (they addressed a broad range of medical disorders) made biases with relevance to headache or RA unlikely.
The 1006 participants were 50-65 yeats at inclusion, had participated in all previous HUNT studies (1, 2 and 3), and had been randomly selected to a population-based imaging study of the head (MRI-HUNT, 2007-2009).
Despite this limitation, the HUNT studies include more than 200 health related variables, which will probably ensure that any remaining bias relevant to insomnia, headache and CMSCs is negligible.
The Norwegian Data Inspectorate, the Norwegian Board of Health, and the Regional Committee for ethics in Medical Research had approved all HUNT studies, and the Regional Committee also approved the present analysis.
In the HUNT studies in Norway from the 1990s the prevalence was 1% in adults [24] and 0.5% in adolescents [25], whereas a more recent study showed 1.7%[26]].
Those who responded to the headache questions were younger, were more likely to be women and had higher socioeconomic status than nonresponders On the other hand, the wide scope of the HUNT studies makes participation bias with specific relevance to headache less likely.
Similar(46)
The third HUNT study (HUNT = Helseundersøkelsen i Nord-Trøndelag) was carried out between October 2006 and June 2008 [30].
Krokstad, S. et al. Cohort profile: the hunt study, Norway.
Like Civil War re-enactors, the community of hunters drawn for this year's hunt studied the past.
The Nord-Trøndelag HUNTth Study (The HUNT Study) is a collaboration among the HUNT Research Centre (Faculty of Medicine, NTNU, Norwegian University of Science and Technology), Nord-Trøndelag County Council, Central Norway Health Authority, and Norwegian Institute of Public Health.
Nord-Trøndelag County was divided into 25 study areas by the HUNT study administration.
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