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Forty states mandate that providers query their patients' prescription histories in the state's prescription drug monitoring program (PDMP) before prescribing controlled substances. However, little is known about providers' use of PDMPs, either with or without a mandate. We measured the share of opioid prescriptions with PDMP queries in Kentucky from 2010 to 2018, before and after the implementation of the first comprehensive PDMP mandate in the Us. Providers queried the PDMP for 12 percent of opioid prescriptions before the mandate; after the mandate, they queried for 56 percent of prescriptions. The share of prescriptions queried was lowest for patients without recent opioid use (3 percent before the mandate, 25 percent after) and highest for pain management specialists (31 percent before, 72 percent after). Over time, high-compliance providers reduced prescribing to the riskiest patients, whereas low-compliance providers continued to prescribe to them. Although the share of prescriptions queried greatly increased after the mandate, compliance remained incomplete, including for patients with high-risk patterns of opioid use.

Some states have not adopted the Affordable Care Act (ACA) Medicaid expansions due to concerns that the expansions may impair access to care and utilization for those who are already insured. We investigate such negative spillovers using a large panel of Medicare beneficiaries. Across many subgroups and outcomes, we find no evidence that the expansions reduced utilization among Medicare beneficiaries and can rule out all but very small changes in utilization or spending. These results indicate that the expansions in Medicaid did not impair access to care or utilization for the Medicare population.

Rollouts of COVID-19 vaccines in the USA were opportunities to redress disparities that surfaced during the pandemic. Initial eligibility criteria, however, neglected geographic, racial/ethnic, and socioeconomic considerations. Marginalized populations may have faced barriers to then-scarce vaccines, reinforcing disparities. Inequalities may have subsided as eligibility expanded. Using spatial modeling, we investigate how strongly local vaccination levels were associated with socioeconomic and racial/ethnic composition as authorities first extended vaccine eligibility to all adults. We harmonize administrative, demographic, and geospatial data across postal codes in eight large US cities over 3 weeks in Spring 2021. We find that, although vaccines were free regardless of health insurance coverage, local vaccination levels in March and April were negatively associated with poverty, enrollment in means-tested public health insurance (e.g., Medicaid), and the uninsured population. By April, vaccination levels in Black and Hispanic communities were only beginning to reach those of Asian and White communities in March. Increases in vaccination were smaller in socioeconomically disadvantaged Black and Hispanic communities than in more affluent, Asian, and White communities. Our findings suggest vaccine rollouts contributed to cumulative disadvantage. Populations that were left most vulnerable to COVID-19 benefited least from early expansions in vaccine availability in large US cities.

Subsidized health insurance markets use diagnosis-based risk adjustment to induce insurers to offer an equitable benefit to individuals of varying expected cost. I demonstrate that technological change after risk adjustment calibration—new drug entry and the onset of generic competition—made certain diagnoses profitable or unprofitable in Medicare Part D. I then exploit variation in diagnoses' profitability driven by technological change to show insurers designed more favorable benefits for drugs that treat profitable diagnoses as compared to unprofitable diagnoses. In the presence of technological change, risk adjustment may not fully neutralize insurers' incentives to select through benefit designs.

The authors estimate the associations between community socioeconomic composition and changes in coronavirus disease 2019 (COVID-19) vaccination levels in eight large cities at three time points. In March, communities with high socioeconomic status (SES) had significantly higher vaccination rates than low-SES communities. Between March and April, low-SES communities had significantly lower changes in percentage vaccinated than high-SES communities. Between April and May, this difference was not significant. Thus, the large vaccination gap between communities during restricted vaccine eligibility did not narrow when eligibility opened up. The link between COVID-19 vaccination and community disadvantage may lead to a bifurcated recovery whereby advantaged communities move on from the pandemic more quickly while disadvantaged communities continue to suffer.

The misuse of prescription opioids has become a serious epidemic in the United States. In response, states have implemented Prescription Drug Monitoring Programs (PDMPs), which record a patient’s opioid prescribing history. While few providers participated in early systems, states have recently begun to require providers to access the PDMP under certain circumstances. We find that “must access” PDMPs significantly reduce measures of misuse in Medicare Part D. In contrast, we find that PDMPs without such provisions have no effect. We find stronger effects when providers are required to access the PDMP under broad circumstances, not only when they are suspicious.

The cough caused by Bordetella per- tussis infection is especially violent and can cause a varie ty of post-tussive injuries.

The Affordable Care Act enables young adults to remain as dependents on their parents' health insurance until age twenty-six, and recent evidence suggests that as many as three million young adults have gained coverage as a result. However, there has been no evidence yet on the policy's effect on access to care, and questions remain about the coverage impact on important subgroups. Using data from two nationally representative surveys, comparing young adults who gained access to dependent coverage to a control group (adults ages 26-34) who were not affected by the new policy, we found sizable coverage gains for adults ages 19-25. The gains continued to grow throughout 2011 (up 6.7 percentage points from September 2010 to September 2011), with the largest gains seen in unmarried adults, nonstudents, and men. Analysis of the timing of the policy impact suggested that early gains in coverage were greatest for people in worse health. We found strong evidence of increased access to care because of the law, with significant reductions in the number of young adults who delayed getting care and in those who did not receive needed care because of cost. [PUBLICATION ABSTRACT]

Since the passage of the Affordable Care Act, there has been much speculation about how many employers will stop offering health insurance once the act's major coverage provisions take effect. Some observers predict little aggregate effect, but others believe that 2014 will mark the beginning of the end for our current system of employer- sponsored insurance. We use theoretical and empirical evidence to address the question, \"How will employers' offerings of health insurance change under health reform?\" First, we describe the economic reasons why employers offer insurance. Second, we recap the relevant provisions of health reform and use our economic framework to consider how they may affect employers' offerings. Third, we review the various predictions that have been made about those offerings under health reform. Finally, we offer some observations on interpreting early data from 2014. [PUBLICATION ABSTRACT]