Fig. 1

Alcohol drinking characteristics in male weekly drinkers in 2004–8 and 2013–4, by birth cohort. Prevalence and mean were adjusted for regions. Size of boxes is proportional to the sample size of the respective birth cohort. Error bars are 95% confidence intervals. Mean consumption per session (g/session) and heavy episodic drinking was based on alcohol intake data reported on the last time the participants drank. Heavy episodic drinking is defined as drinking > 60 g of pure alcohol in one session for men. All men at baseline (n = 210,259) and resurvey (n = 9569) were included in (a). All male weekly drinkers at baseline (n = 69,904) and resurvey (n = 2732) were included in (b-d)