The Lancet Respiratory Medicine RETRACTED: Effect of early versus late or no tracheostomy on mortality of critically ill patients receiving mechanical ventilation: a systematic review and meta-analysis  Dr Ilias I Siempos, MD, Theodora K Ntaidou, MD, Filippos T Filippidis, MD, Prof Augustine M K Choi, MD  The Lancet Respiratory Medicine  DOI: 10.1016/S2213-2600(14)70125-0 Copyright © 2014 Elsevier Ltd Terms and Conditions

Figure 1 Study flow diagram Made in accordance with the Preferred Reporting Items of Systematic Reviews and Meta-Analyses (PRISMA) statement with modifications. *The appendix provides reference information about the 175 excluded articles and details of searches in scientific conference proceedings. The Lancet Respiratory Medicine DOI: (10.1016/S2213-2600(14)70125-0) Copyright © 2014 Elsevier Ltd Terms and Conditions

Figure 2 Mortality in the intensive care unit and early tracheostomy We calculated pooled odds ratio and 95% CIs with a random-effects model. Total refers to number of patients assigned to each group. The Lancet Respiratory Medicine DOI: (10.1016/S2213-2600(14)70125-0) Copyright © 2014 Elsevier Ltd Terms and Conditions

Figure 3 Pneumonia and early tracheostomy We calculated pooled odds ratio and 95% CIs with a random-effects model. Total refers to number of patients assigned to each group. The Lancet Respiratory Medicine DOI: (10.1016/S2213-2600(14)70125-0) Copyright © 2014 Elsevier Ltd Terms and Conditions

Figure 4 1-year mortality and early tracheostomy We calculated pooled risk ratio and 95% CIs with a random-effects model. Total refers to number of patients assigned to each group. The Lancet Respiratory Medicine DOI: (10.1016/S2213-2600(14)70125-0) Copyright © 2014 Elsevier Ltd Terms and Conditions