Original Investigation

Timing of Antidiabetic Medication Initiation and Risk of Cardiovascular Events and Mortality

JAMA Network Open 10.1001/jamanetworkopen.2026.19362

June 22, 2026 at 11:00 AM EDT

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Is there a difference in the risk of major adverse cardiovascular events (MACE) and mortality among individuals who initiated antidiabetic medication (ADM) within 3, 6, or 12 months after meeting the diagnostic threshold for type 2 diabetes?In this cohort study involving 23 452 participants, earlier ADM initiation after meeting the diagnostic threshold for type 2 diabetes was not associated with risk of MACE but was associated with a lower risk of mortality over a 5-year follow-up.These findings suggest health care authorities should adopt evidence-based strategies that promote timely intervention to optimize outcomes in type 2 diabetes management.

Corresponding Authors: Yoosoo Chang, MD, PhD, Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Republic of Korea (yoosoo@skku.edu); Ju Hwan Kim, PharmD, PhD, Research Professor, School of Pharmacy, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 16419, South Korea (jukim928@skku.edu).

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