Testing for non-inferior mortality: a systematic review of non-inferiority margin sizes and trial characteristics http://orcid.org/0000-0003-2963-9601Sandra Pong1, Martin Urner2,3, Robert A Fowler2,4, Nicholas Mitsakakis5, Winnie Seto1,6, James S Hutchison7, Michelle Science8, http://orcid.org/0000-0001-8827-3764Nick Daneman9 1Department of Pharmacy, The Hospital for Sick Children, Toronto, Ontario, Canada 2Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto,...