In Norway regional cohort studies have been conducted in Nord-Trøndelag (HUNT) and in Tromsø (The Tromsø Cohort study, T1-T6).
In the HUNT study, visits to a CAM provider have been studied twice, in 1997 and in 2008.
In the field of CAM research there are few studies focusing on gender issues, but studies generally demonstrate that men use CAM to a lesser degree than women.
The design includes repeated population health surveys to which total birth cohorts and random samples are invited.
The questionnaires have not been validated, however, a Cronbach’s alpha test of internal consistency of the questions analyzed in this paper was 0.403.
The health screening included measuring of height, weight, waist and hip circumference and blood pressure.
The questionnaires were developed specifically for the Tromsø study and included questions about life style and health issues in addition to socio demographic variables.
A total of 33% of the participants reported use of any CAM within the last 12 months, women more often than men (42% and 24%, respectively).