Introduction

This week, there are four original investigations in JAMA. Group-based intervention reduced opioid use among patients taking strong opioids to treat chronic non-malignant pain compared with usual care. Coronary artery calcium score significantly improved risk discrimination and risk reclassification for coronary heart disease when added to traditional risk factors. In this registry-based study of patients with degenerative mitral regurgitation undergoing trans-cathlete mitral valve repair, the procedure was safe and resulted in successful repair in 88.9% of patients.