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Table 1 Summary of the characteristics of the studies comparing patients with and without mechanical ventilation.

From: Invasive mechanical ventilation as a risk factor for acute kidney injury in the critically ill: a systematic review and meta-analysis

Author/year Inclusion diagnosis Subgroup Criteria type used MV precedes AKI
Mataloun 2006 [17] General population Mixed Absolute sCr rise Yes
Payen 2008 [18] General population Mixed Absolute sCr rise Unclear
Fonseca Ruiz 2011 [26] General population Mixed AKIN Unclear
Medve 2011 [30] General population Mixed AKIN Unclear
Piccinni 2011 [33] General population Mixed RIFLE Unclear
Brito 2009 [19] CABG Cardiac disease Dialysis, relative and absolute sCr rise Yes
Marenzi 2010 [24] STEMI with cardiogenic shock Cardiac disease Relative sCr rise Yes
Iglesias 2010 [22] Orthotopic liver transplant Gastro-intestinal AKIN Yes
Lopes 2011 [28] Cirrhosis Gastro-intestinal RIFLE Unclear
O'Riordan 2011 [31] Paracetamol hepatotoxicity Gastro-intestinal AKIN Unclear
Abdulkader 2010 [21] 2009 Influenza A (H1N1) Influenza A RIFLE Unclear
Jung 2011 [27] 2009 Influenza A (H1N1) Influenza A RIFLE Unclear
Martin-Loeches 2011 [29] 2009 Influenza A (H1N1) Influenza A AKIN Unclear
Pettila 2011 [32] 2009 Influenza A (H1N1) Influenza A RIFLE Unclear
Shortgen 2001 [12] Severe sepsis or septic shock Sepsis Relative sCr rise Yes
Yegenaga 2004 [15] SIRS/sepsis Sepsis Absolute sCr rise Yes
Hoste 2003 [14] Surgical sepsis Sepsis Absolute sCr rise Unclear
Lopes 2009 [20] Sepsis Sepsis AKIN and RIFLE Unclear
Vivino 1998 [11] Trauma Miscellaneous Absolute and relative sCr rise Yes
Rocha 2005 [16] Lung transplant Miscellaneous RIFLE and dialysis Yes
Lahoti 2010 [23] AML or high-risk MDS Miscellaneous RIFLE Yes
Létourneau 2002 [13] Bone marrow transplant Miscellaneous Absolute rise and relative sCr rise Unclear
Murugan 2010 [25] Community-acquired pneumonia Miscellaneous RIFLE Unclear
  1. MV, mechanical ventilation; AKI, acute kidney injury; sCr, serum creatinine; CABG, coronary artery bypass grafting; STEMI, ST elevation myocardial infarction; SIRS, systemic inflammatory response syndrome; AML, acute myeloid leukaemia; MDS, myelodysplastic syndrome.