To the Editor We read with great interest the article titled “Association Between Preoperative Metformin Exposure and Postoperative Outcomes in Adults With Type 2 Diabetes.”1 This retrospective study shows an association between metformin prescriptions provided to individuals with type 2 diabetes before a major surgical procedure and reduced risk-adjusted mortality and readmission after the operation.2 In general, it is a well-designed study; however, we would like to address some questions concerning the content of this article.
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Li T, Ma H. Questions Regarding Association Between Preoperative Metformin Exposure and Postoperative Outcomes in Adults With Type 2 Diabetes. JAMA Surg. Published online September 09, 2020. doi:10.1001/jamasurg.2020.3769
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