Results
Twelve percent of the survey population of 18–25 year olds (n = 6,496) reported current abuse of prescription opioids. For this population, prevalence of previous substance use was 57% for alcohol, 56% for cigarettes, and 34% for marijuana. We found previous alcohol use was associated with the subsequent abuse of prescription opioids in young men but not young women. Among both men and women, previous marijuana use was 2.5 times more likely than no previous marijuana to be associated with subsequent abuse of prescription opioids. We found that among young boys, all previous substance use (alcohol, cigarettes, and marijuana), but only previous marijuana use in young girls, was associated with an increased likelihood of subsequent abuse of prescription opioids during young adulthood.