Yes agreed - the title doesn't seem to accurately reflect the details in the abstract. Beyond a larger sample size, IMO it would have been also been useful to

Yes agreed - the title doesn't seem to accurately reflect the details in the abstract. Beyond a larger sample size, IMO it would have been also been useful to take repeat measurements of the cohort over time and also under the influence, especially given the observation of "change in line with duration of abstinence from cannabis use". Perhaps those details are in the full paper, I haven't been able to find a copy.