Fig. 3

Comparison of mean depressive symptoms scores on the QIDS-SR16 across the cannabis use groups at both time referents (before and during the pandemic). A significant main effect of time referent showed that anxiety levels increased during the pandemic relative to pre-pandemic estimates in all groups. A significant main effect of cannabis group showed that those who decreased their cannabis use had more severe depression symptoms than those who did not change their use and those who did not use. There was also a non-significant trend (†) for those who increased their cannabis use toward having more severe depression symptoms compared to those who did not change their use during the pandemic and non-users. Note.*p < 0.05, ***p < 0.001, †non-significant trends (p < 0.06)