Study context, the VIPVIZA trial and design of the present study
The VIPVIZA trial, a pragmatic, open-label, randomised controlled trial with masked evaluators (PROBE) is conducted in Västerbotten county in northern Sweden. VIPVIZA is integrated in the Västerbotten Intervention Program (VIP), which offers individual health promotion counselling to all inhabitants of Västerbotten the year they turn 40, 50 and 60 years (