This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/1471-0528.15964 This article is protected by copyright. All rights reserved DR. BAIJU R SHAH (Orcid ID : 0000-0003-3598-3628) Article type : Main research article Perinatal outcomes for untreated women with gestational diabetes by IADPSG criteria: a population-based study Baiju R. Shah 1–3 Faranak Sharifi 1 1 Department of Medicine, University of Toronto, Toronto, Canada 2 Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, Canada 3 Institute for Clinical Evaluative Sciences, Toronto, Canada Corresponding author: Dr. Baiju R. Shah G106 – 2075 Bayview Avenue, Toronto, Ontario, Canada M4N 3M5 Tel +1 416-480-4706 Email baiju.shah@ices.on.ca Short title: Outcomes for untreated women with GDM by IADPSG Accepted Article