Fig. 1

Prevalence of past-year recreational cannabis “eating or drinking” in different age groups of the Thai population aged 18–65 years across the three years between 2019 and 2021. In a Bayesian comparison of population prevalence, the posterior mean difference is -0.18 (2019–2020) with a 95% confidence interval = -1.12, 0.75 and 1.10 (2020–2021) with a 95% confidence interval = -0.65, 2.85