1 Division of Critical Care, Department of Medicine, McMaster University, St Joseph's Healthcare Hamilton, 50 Charlton Avenue, Hamilton, ON, L8N 4A6, Canada. alhazzaw@mcmaster.ca.
2 Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada. alhazzaw@mcmaster.ca.
3 Department of Internal Medicine, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates.
4 Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada.
5 Division of Critical Care, Department of Medicine, McMaster University, St Joseph's Healthcare Hamilton, 50 Charlton Avenue, Hamilton, ON, L8N 4A6, Canada.
6 Department of Intensive Care, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark.
7 Department of Surgery, McMaster University, Hamilton, Canada.
8 Department of Critical Care, Dammam University, Dammam, Saudi Arabia.
9 Discipline of Acute Care Medicine, University of Adelaide, Adelaide, Australia.
10 Department of Critical Care, Security Forces Hospital, Riyadh, Saudi Arabia.
11 Department of Medicine, Alfaisal University, Riyadh, Saudi Arabia.
12 The George Institute for Global Health and Royal North Shore Hospital, University of Sydney, Sydney, NSW, Australia.
Owing to an oversight by the authors, all the figures in the last column of Table 2 (upper section: Number needed to treat; lower section: Number needed to harm) in this article were given without the final digit 0 and are thus 10 times too small.