Medicaid expansion and opioid prescriptions: Evidence from the Medical Expenditure Panel Survey
利用2008-2019年零售处方药数据，研究发现ACA医疗补助扩展并未显著增加新合格人群的阿片类药物处方量，可能因为当时阿片类药物危害已广为人知。
Evidence is mixed on whether increased access to insurance, specifically through the ACA's Medicaid expansion, exacerbated the opioid public health crisis through increased opioid prescribing. Using survey data on retail prescription drug fills from 2008 to 2019, we did not find a significant relationship between Medicaid expansion and opioid prescribing in the newly eligible Medicaid population. It may be that the dangers of opioids were known well enough by the time of the Medicaid expansion that lack of access to care was no longer a binding constraint on opioid prescription receipt.