Springer R, et al. - Using inverse-propensity weights to adjust for differences among insurance groups, researchers performed a cross-sectional study in order to compare Oregon residents who had been continuously insured by Medicaid, were newly insured after Medicaid expansion in 2014 and who returned to Medicaid coverage after expansion regarding the prevalence of opioid prescriptions and opioid-use-disorder (OUD). They also compared time from OUD diagnosis to receipt of medication-assisted treatment (MAT). Among the 225,295 Oregon Medicaid adult beneficiaries, newly and returning insured enrollees were less likely to be dispensed opioids, use opioids chronically, have OUD diagnoses, and receive MAT after OUD diagnosis compared vs the continuously insured.