The age-specific trends in prevalence of past-month use at the country level, based on the first and last available estimate, are further displayed in Figure 2. Only in Czechia and Poland, marked decreases in prevalence of use in most if not all age groups were observed. In France, the Netherlands, and Spain, pronounced increases among middle-aged adults were identified. In contrast, Germany reports increases in total use which were driven mostly by younger adults. Very similar country patterns were present for age-specific changes in past-year prevalence (see Supplemental Figure 3).
