Ontario, Canada: One in seven US cannabis consumers acknowledge having purchased cannabis from an out-of-state market within the past year, according to data published in the journal Drug and Alcohol Dependence.
A pair of investigators affiliated with the University of Waterloo in Canada assessed cannabis purchasing habits of 4,320 subjects who acknowledged having consumed cannabis in the past 12 months.
Overall, 15 percent of participants said that they obtained cannabis from another state. Respondents in states where adult-use cannabis sales are legal were less likely to make out-of-state purchases than were respondents in states where cannabis access is prohibited.
Respondents residing in the south-central region of the United States, which includes Texas, and the north-central region of the United States, which includes Nebraska and the Dakotas, were most likely to acknowledge making out-of-state purchases. Those subjects residing in the pacific region of the United States (California, Oregon, and Washington) were least likely to admit having done so.
Full text of the study, "Out-of-state cannabis purchases in the United States," appears in Drug and Alcohol Dependence.