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Table 1 Details of each enrolled study

From: Can body mass index predict clinical outcomes for patients with acute lung injury/acute respiratory distress syndrome? A meta-analysis

Author (year) Study design Country Population, n Outcomea BMI measurement Timing Number with BMI/total patients (%) Mortality data included in analysis
O’Brien 2006 [17] Retrospective cohort, multicenter USA 1488 Based on recorded weight and height At ICU admission 1488/1673 (89%) Hospital mortality
Morris 2007 [21] Prospective cohort, multicenter USA 825 Based on recorded weight and height At Hospital admission 825/1113 (74%) Mortality
Stapleton 2010 [20] Retrospective, multicenter USA 1409 Based on recorded weight and height At ICU admission 1409/1451 (97%) 90-day mortality
Soto 2012 [19] Retrospective, multicenter USA 751 Based on recorded weight and height At ICU admission 751/848 (88%) ICU mortality
Gong 2016 [18] Cohort, multicenter USA 1795 Based on recorded weight and height At ICU admission 1795/1995 (90%) ICU mortality
  1. BMI body mass index, ICU intensive care unit
  2. aOutcome measures include: mortality; length of stay in ICU; length of stay in hospital; mechanical-ventilation-free days; duration of mechanical ventilation; organ-failure-free days; plasma cytokine level; time to death; time to acute kidney injury