Here's the actual study, rather than a summary of it: https://www.cdc.gov/mmwr/volumes/66/wr/mm6610a1.htm https://www.cdc.gov/mmwr/volumes/66/wr/mm6610a1.htm H

Here's the actual study, rather than a summary of it: https://www.cdc.gov/mmwr/volumes/66/wr/mm6610a1.htm https://www.cdc.gov/mmwr/volumes/66/wr/mm6610a1.htm Here's what it says about adjusting for pain intensity: > Third, information on pain intensity or duration were not available, and the etiology of pain, which might influence the duration of opioid use, was not considered in the analysis.