The study that most people reference in this setting[1] simply associates days of opioid usage to likelihood of using opioids in the long term. A simple (and ve

The study that most people reference in this setting[1] simply associates days of opioid usage to likelihood of using opioids in the long term. A simple (and very likely) explanation is that people who need opioids for ten days are likely suffering from chronic pain. Are you thinking of a different study? 1. https://www.cdc.gov/mmwr/volumes/66/wr/mm6610a1.htm#F1_up https://www.cdc.gov/mmwr/volumes/66/wr/mm6610a1.htm#F1_up