I can speak specifically to university students who we do research with at UBC. This is generally a high-performing group. Of those students, the rates of cannabis use are similar to what we see in the general Canadian population. We have about 35% to 40% who have used in the past year and maybe 5% to 10% who are fairly frequent users. We're embarking on a study to follow their university careers to see if there are differences in how these people go through their undergraduate education.
In looking at our cross-sectional data, we find that even the frequent cannabis users, on measures of mental health and well-being, are equivalent to and in some cases less anxious than are the non-users and even the infrequent users. We don't see any functional deficits on our measures according to the cannabis use, at least amongst the UBC undergraduates, who are admittedly overall a fairly high-functioning bunch.