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  • Association Between mRNA Vaccination and COVID-19 Hospitalization and Disease Severity

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    JAMA. 2021; 326(20):2043-2054. doi: 10.1001/jama.2021.19499

    This case-control study explores the association between vaccination with mRNA COVID-19 vaccines and hospitalization for COVID-19, and, among patients hospitalized with COVID-19, the association with progression to critical disease in adults from 18 US states.

  • Association of Treatment With Metformin vs Sulfonylurea With Major Adverse Cardiovascular Events Among Patients With Diabetes and Reduced Kidney Function

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    JAMA. 2019; 322(12):1167-1177. doi: 10.1001/jama.2019.13206

    This cohort study uses data from the National Veterans Health Administration, Medicare, Medicaid, and National Death Index to compare major adverse cardiovascular events among patients with diabetes and reduced kidney function who continued treatment with metformin or sulfonylurea.

  • Effectiveness of β-Lactam Monotherapy vs Macrolide Combination Therapy for Children Hospitalized With Pneumonia

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    JAMA Pediatr. 2017; 171(12):1184-1191. doi: 10.1001/jamapediatrics.2017.3225

    This cohort study compares the effectiveness of β-lactam monotherapy vs β-lactam plus macrolide combination therapy among children hospitalized with pneumonia.

  • Association Between Hospitalization With Community-Acquired Laboratory-Confirmed Influenza Pneumonia and Prior Receipt of Influenza Vaccination

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    JAMA. 2015; 314(14):1488-1497. doi: 10.1001/jama.2015.12160

    This case-control study investigates the association between influenza vaccination and subsequent hospitalization for community-acquired influenza pneumonia.

  • Association Between Intensification of Metformin Treatment With Insulin vs Sulfonylureas and Cardiovascular Events and All-Cause Mortality Among Patients With Diabetes

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    JAMA. 2014; 311(22):2288-2296. doi: 10.1001/jama.2014.4312

    In a retrospective cohort study of veterans with diabetes initially treated with metformin, Roumie and coauthors compared time to acute myocardial infarction, stroke, or death in patients who added insulin or a sulfonylurea.

  • Association Between the Initiation of Anti–Tumor Necrosis Factor Therapy and the Risk of Herpes Zoster

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    JAMA. 2013; 309(9):887-895. doi: 10.1001/jama.2013.1099
    In a large cohort study involving 59 066 participants, Winthrop and coauthors ascertained whether initiation of anti-TNF therapy compared with nonbiologic comparators was associated with increased herpes zoster risk.
  • Initiation of Tumor Necrosis Factor-α Antagonists and the Risk of Hospitalization for Infection in Patients With Autoimmune Diseases

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    JAMA. 2011; 306(21):2331-2339. doi: 10.1001/jama.2011.1692
  • Antibiotic Prescription Rates for Acute Respiratory Tract Infections in US Ambulatory Settings

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    JAMA. 2009; 302(7):758-766. doi: 10.1001/jama.2009.1163