| IN THIS ISSUE OF JAMAAudio Highlights Audio Editors' Summary: Platelet-Rich Plasma Injection for Knee Osteoarthritis, Bariatric Surgery for Nonalcoholic Steatohepatitis and Liver and Cardiac Outcomes, mRNA Vaccination and COVID-19 Hospitalizations, and more ORIGINAL INVESTIGATIONEffect of Intra-articular Platelet-Rich Plasma vs Placebo Injection on Pain and Medial Tibial Cartilage Volume in Patients With Knee Osteoarthritis: The RESTORE Randomized Clinical Trial Kim L. Bennell, PhD; Kade L. Paterson, PhD; Ben R. Metcalf, BSc; et al. Earn CME credit Editorial: Platelet-Rich Plasma for Osteoarthritis and Achilles Tendinitis; Jeffrey N. Katz, MD, MScAssociation of Bariatric Surgery With Major Adverse Liver and Cardiovascular Outcomes in Patients With Biopsy-Proven Nonalcoholic Steatohepatitis Ali Aminian, MD; Abbas Al-Kurd, MD; Rickesha Wilson, MD; et al. Earn CME credit Editorial: Bariatric Surgery as a Strategy for Improving Outcomes in Nonalcoholic Steatohepatitis; Kathleen E. Corey, MD, MPH, MMSc; Zoe Nicole Memel, MDAssociation Between mRNA Vaccination and COVID-19 Hospitalization and Disease Severity Mark W. Tenforde, MD, PhD; Wesley H. Self, MD, MPH; Katherine Adams, MPH; et al. Earn CME credit Editorial: Understanding Breakthrough Infections Following mRNA SARS-CoV-2 Vaccination; Michael Klompas, MD, MPH RESEARCH LETTERTrends in Obesity Prevalence Among Adults Aged 18 Through 25 Years, 1976-2018 Alejandra Ellison-Barnes, MD, MPH; Sara Johnson, PhD, MPH; Kimberly Gudzune, MD, MPHIncidence of Pancreatic Cancer by Age and Sex in the US, 2000-2018 Srinivas Gaddam, MD, MPH; Yazan Abboud, MD; Janice Oh, MD; et al. VIEWPOINTThe Self-directed Medical Student Curriculum Joseph H. Wu, PhD; Philip A. Gruppuso, MD; Eli Y. Adashi, MD, MSContraception Requirements in Clinical Trials: Considerations From Studies on Sexually Transmitted Infections Jennifer E. Balkus, PhD; Jodie Dionne-Odom, MD; Harold C. Wiesenfeld, MD, CMTwenty Years After the Anthrax Terrorist Attacks of 2001: Lessons Learned and Unlearned for the COVID-19 Response Lawrence O. Gostin, JD; Jennifer B. Nuzzo, DrPH, SM A PIECE OF MY MINDTaking Down the Shingle Diane Roston, MD EDITORIALPlatelet-Rich Plasma for Osteoarthritis and Achilles Tendinitis Jeffrey N. Katz, MD, MScBariatric Surgery as a Strategy for Improving Outcomes in Nonalcoholic Steatohepatitis Kathleen E. Corey, MD, MPH, MMSc; Zoe Nicole Memel, MDUnderstanding Breakthrough Infections Following mRNA SARS-CoV-2 Vaccination Michael Klompas, MD, MPH REVIEWManagement of Acne Vulgaris: A Review Dawn Z. Eichenfield, MD, PhD; Jessica Sprague, MD; Lawrence F. Eichenfield, MD Earn CME credit Audio Clinical Review: Management of Acne Vulgaris JAMA GUIDE TO STATISTICS AND METHODSUse of Confidence Intervals in Interpreting Nonstatistically Significant Results Alexander T. Hawkins, MD, MPH; Lauren R. Samuels, PhD JAMA CLINICAL CHALLENGEBack Pain, Fever, and Cough in a 46-Year-Old Man Aaron Richterman, MD, MPH; Melissa Richard-Greenblatt, PhD; Kathryn Whitaker, MD Earn CME credit MEDICAL NEWS & PERSPECTIVESTrials Test Mushrooms and Herbs as Anti–COVID-19 Agents Anita Slomski JAMA Medical News Audio: November 2021 Medical News Summary NEWS FROM THE FOOD AND DRUG ADMINISTRATIONCompounded Drug Guidance for Hospital and Health System Pharmacies Rita Rubin, MANew Clinical Trial Grants for Rare Diseases Rita Rubin, MAFirst Thymus Tissue Product Approved for Rare Disease Rita Rubin, MA NEWS FROM THE CENTERS FOR DISEASE CONTROL AND PREVENTIONCOVID-19 Vaccine Highly Effective Against Adolescent Hospitalizations Bridget M. Kuehn, MSJUnhygienic Practices Lead to Routine Vaccination-Linked Infections Bridget M. Kuehn, MSJ CLINICAL TRIALS UPDATEPembrolizumab Boosts Breast and Cervical Cancer Survival Anita SlomskiDaily COVID-19 Tests Compared With Isolation After School Exposure Anita SlomskiIntensive Blood Pressure Control Lowers Cardiovascular Risk Anita SlomskiVirtual Care Mitigates Pain and Drug Errors After Surgery Anita Slomski HEALTH AGENCIES UPDATESubstance Use Disorders and COVID-19 Vaccine Response Rita Rubin, MASupport for Primary Care Clinicians in Underserved Areas Rita Rubin, MAThe Cost of Rare Diseases Rita Rubin, MA POETRY AND MEDICINEfirst death Jordynn Klein, BAS JAMA REVISITED Bacterially Tainted Money JAMA PATIENT PAGEAcne Treatment Raj Chovatiya, MD, PhD Audio Clinical Review: Management of Acne Vulgaris AUDIO Audio Editors' SummaryPlatelet-Rich Plasma Injection for Knee Osteoarthritis, Bariatric Surgery for Nonalcoholic Steatohepatitis and Liver and Cardiac Outcomes, mRNA Vaccination and COVID-19 Hospitalizations, and more Audio Clinical ReviewManagement of Acne Vulgaris JAMA Medical News AudioNovember 2021 Medical News Summary COMMENT & RESPONSERisk of N-Nitrosodimethylamine (NMDA) Formation With Ranitidine David G. Strauss, MD, PhD; Jeffry Florian, PhD; David Keire, PhDRisk of N-Nitrosodimethylamine (NMDA) Formation With Ranitidine—Reply C. Michael White, PharmD; Adrian V. Hernandez, MD, PhDThe Role of Lipoprotein(a) in Cardiovascular Diseases Margaret Nachtigall, MD; Richard H. Nachtigall, MDThe Role of Lipoprotein(a) in Cardiovascular Diseases—Reply Pradeep Natarajan, MD, MMSc; Hannah Miksenas, BA; James L. Januzzi Jr, MDEffect of 7 vs 14 Days of Antibiotics Among Afebrile Men With Urinary Tract Infection Joel Goldberg, MD; John H. Powers III, MDEffect of 7 vs 14 Days of Antibiotics Among Afebrile Men With Urinary Tract Infection Sunn Hoah Kelvin Yap, BScEffect of 7 vs 14 Days of Antibiotics Among Afebrile Men With Urinary Tract Infection Haroon Ahmed, PhD; David Gillespie, PhD; Emma Thomas-Jones, PhDEffect of 7 vs 14 Days of Antibiotics Among Afebrile Men With Urinary Tract Infection—Reply Dimitri M. Drekonja, MD, MS; Barbara Trautner, MD, PhD; James R. Johnson, MD CORRECTION Error in Box Incorrect Laboratory Value and Reference JAMA MASTHEAD JAMA |