Consequences of a shortage and rationing: Evidence from a pediatric vaccine.

Shortages and rationing are common in health care, yet we know little about the consequences. We examine an 18-month shortage of the pediatric Haemophilus Influenzae Type B (Hib) vaccine. Using insurance claims data and variation in shortage exposure across birth cohorts, we find that the shortage reduced uptake of high-value primary doses by 4 percentage points and low-value booster doses by 26 percentage points. This suggests providers largely complied with rationing recommendations. In the long-run, catch-up vaccination occurred but was incomplete: shortage-exposed cohorts were 4 percentage points less likely to have received the ir booster dose years later. We also find that the shortage and rationing caused provider switches, extra provider visits, and negative spillovers to other care.

Comparison of Postpartum Opioid Prescriptions Before vs During the COVID-19 Pandemic.

Importance: The COVID-19 pandemic substantially disrupted routine health care and exacerbated existing barriers to health care access. Although postpartum women frequently experience pain that interferes with activities of daily living, which is often successfully treated with prescription opioid analgesics, they are also at high risk for opioid misuse. Objective: To compare postpartum opioid prescription fills after the onset of the COVID-19 pandemic in March 2020 with fills before the pandemic. Design, Setting, and Participants: In this cross-sectional study of 460 371 privately insured postpartum women who delivered a singleton live newborn between July 1, 2018, and December 31, 2020, postpartum opioid fills before March 1, 2020, were compared with fills after March 1, 2020. Statistical analysis was performed from December 1, 2021, to September 15, 2022. Exposure: COVID-19 pandemic onset in March 2020. Main Outcomes and Measures: The main outcome was postpartum opioid fills, defined as patient fills of opioid prescriptions during the 6 months after birth. Opioid prescriptions were explored in terms of 5 measures: mean number of fills per person, mean filled morphine milligram equivalents (MMEs) per day, mean days supplied, percentage of patients filling a prescription for a schedule II opioid, and percentage of patients filling a prescription for a schedule III or higher opioid. Results: Among 460 371 postpartum women (mean [SD] age at delivery, 29.0 [10.8] years), those who gave birth to a single, live newborn after March 2020 were 2.8 percentage points more likely to fill an opioid prescription than expected based on the preexisting trend (forecasted, 35.0% [95% CI, 34.0%-35.9%]; actual, 37.8% [95% CI, 36.8%-38.7%]). The COVID-19 period was also associated with an increase in MMEs per day (forecasted mean [SD], 34.1 [2.0] [95% CI, 33.6-34.7]; actual mean [SD], 35.8 [1.8] [95% CI, 35.3-36.3]), number of opioid fills per patient (forecasted, 0.49 [95% CI, 0.48-0.51]; actual, 0.54 [95% CI, 0.51-0.55]), and percentage of patients filling a schedule II opioid prescription (forecasted, 28.7% [95% CI, 27.9%-29.6%]; actual, 31.5% [95% CI, 30.6%-32.3%]). There was no significant association with days' suppy of opioids per prescription or percentage of patients filling a prescription for a schedule III or higher opioid. Results stratified by delivery modality showed that the observed increases were larger for patients who delivered by cesarean birth than those delivering vaginally. Conclusions and Relevance: This cross-sectional study suggests that the onset of the COVID-19 pandemic was associated with significant increases in postpartum opioid fills. Increases in opioid prescriptions may be associated with increased risk of opioid misuse, opioid use disorder, and opioid-related overdose among postpartum women.

Spillover of Medicaid Expansion to Prescribing of Opioid Use Disorder Medications in Medicare Part D.

OBJECTIVE: The authors examined whether there were positive spillovers in opioid use disorder medication prescribing to Medicare Part D beneficiaries in Medicaid expansion states. Although prior studies have shown several positive benefits of Medicaid expansion for Americans with opioid use disorder, research has not examined potential spillovers to Medicare beneficiaries who have been hit hard by the opioid crisis. METHODS: Prescribing data were taken from the Medicare Part D Prescription Public Use File (2010-2017). A difference-in-differences linear regression framework was used to identify spillovers in prescribing of buprenorphine and injectable naltrexone to Medicare Part D beneficiaries in Medicaid expansion states. Three sets of dependent variables measured medication prescribing at the county-year level (N=24,850). All models included county and year fixed effects, with standard errors clustered at the state level to address within-state serial correlation. RESULTS: Medicaid expansion was associated with an increase in the probability of a county having an injectable naltrexone provider (p<0.01). After expansion, the number of buprenorphine providers in expansion states increased by 5.6% (p<0.05), and the number of injectable naltrexone providers increased by 3.3% (p<0.01), relative to nonexpansion states. Expansion was associated with a 23.1% (p<0.01) increase in the number of daily doses of injectable naltrexone, relative to nonexpansion states. CONCLUSIONS: Medicaid expansion states may be better equipped to address the opioid crisis because of direct benefits to Medicaid beneficiaries and availability of opioid use disorder medications for Medicare Part D beneficiaries. However, additional efforts are likely needed to close the opioid use disorder treatment gap for Medicare beneficiaries.

Information shocks and pharmaceutical firms' marketing efforts: Evidence from the Chantix black box warning removal.

We study how pharmaceutical firm marketing responds to a regulatory decision that represents a positive information shock about drug safety. In the context of the smoking cessation drug Chantix, we estimate the effects of a Food and Drug Administration (FDA) decision to remove the drug's black box warning on two forms of marketing: monetary and in-kind payments to physicians (detailing) and direct-to-consumer advertising. Using identification strategies that leverage geographic variation in latent demand for smoking cessation therapy and the targeted nature of the information shock, we find that the removal of the warning significantly increased Chantix-related detailing payments and increased expenditures on national television advertising of Chantix. Understanding these firm-level strategic promotion responses is important, as they have implications for the dissemination of new drug information and the behaviors of physicians and consumers.

Population Mortality and Laws Encouraging Influenza Vaccination for Hospital Workers.

BACKGROUND: Since 1995, 14 states have passed laws encouraging or mandating influenza vaccination for hospital workers. Although the Centers for Disease Control and Prevention recommends vaccinating health care workers to reduce disease transmission and patient risk, the effect of these laws on pneumonia and influenza mortality is unknown. OBJECTIVE: To measure the effect of state-level hospital worker influenza vaccination laws on pneumonia and influenza mortality. DESIGN: Quasi-experimental observational study. SETTING: United States. PARTICIPANTS: Population of all states from 1995 to 2017. INTERVENTION: State adoption of a law promoting influenza vaccination for hospital workers. MEASUREMENTS: Pneumonia and influenza mortality per 100 000 persons by state and by month, both population-wide and separately by age group, obtained from restricted-access National Vital Statistics System files. Linear and log-linear models were used to compare changes in mortality rates for adopting versus nonadopting states. RESULTS: Implementation of state laws requiring hospitals to offer influenza vaccination to their employees was associated with a 2.5% reduction in the monthly pneumonia and influenza mortality rate (-0.16 deaths per 100 000 persons [95% CI, -0.29 to -0.02]; P = 0.022) during the years when the vaccine was well matched to the circulating strains. The largest effects occurred among elderly persons and during peak influenza months. LIMITATION: Utilization of large-scale national data precluded analysis of more specific outcomes, such as laboratory-confirmed or hospital-acquired influenza. CONCLUSION: State laws promoting hospital worker vaccination against influenza may be effective in preventing pneumonia- and influenza-related deaths, particularly among elderly persons. Vaccinating hospital workers may substantially reduce the spread of influenza and protect the most vulnerable populations. PRIMARY FUNDING SOURCE: None.

Effectiveness of vaccination recommendations versus mandates: Evidence from the hepatitis A vaccine.

I provide novel evidence on the effectiveness of two vaccination policies - simple non-binding recommendations to vaccinate versus mandates requiring vaccination prior to childcare or kindergarten attendance - in the context of the only disease whose institutional features permit a credible examination of both: hepatitis A. Using provider-verified immunization data I find that recommendations significantly increased hepatitis A vaccination rates among young children by at least 20 percentage points, while mandates increase rates by another 8 percentage points. These policies also significantly reduced population hepatitis A incidence. My results suggest a range of policy options for addressing suboptimally low population vaccination rates.