From January 1, 2002, to December 31, 2011, a total of 3 270 650 persons were included in the study cohort contributing 31 213 252 person-years at risk. For 51 373 cohort members (1.6%), follow-up was ended before the end of the study; 50 521 emigrated from Denmark, and 852 were lost to follow-up. The mean follow-up time for the cohort members was 9.7 years. A total of 27 236 persons in our cohort died during the follow-up period, corresponding to a mortality rate of 8.7 deaths per 10 000 person-years.
