U.S. state policies on opioid prescribing during the peak of the prescription opioid crisis: Associations with opioid overdose mortality

Opioid prescribing policies in U.S. states at the peak of the prescription opioid epidemic had modest mortality benefit, and did not reduce non-prescription opioid overdose mortality. A strong provision for prescriber training was the only provision associated with reduced prescription and non-prescription opioid overdose mortality.