Fig. 5. Playtime for each of the 22 weeks in dataset 3.

The dashed line represents the implementation of regulations on 1 September 2021. The chart on the left shows the prevalence of heavy play for each week during this period, calculated in a consistent manner with the rest of our datasets (playing for more than 4 hours per day, 6 days per week). The chart on the right shows mean playtime per account for each week in this dataset. Dotted horizontal lines represent overall mean prevalence / playtime per account for both preregulation and postregulation periods. No reduction in either mean playtime or heaviness of playtime is observable postregulation.