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Table 2 Baseline demographic and clinical characteristics of included patients

From: Effect of oxygenation modalities among patients with postoperative respiratory failure: a pairwise and network meta-analysis of randomized controlled trials

Study name Study groups Total number Age Male (%) BMI SAPS II score Respiratory rate PaO2/FiO2 ratio PaCO2
Yu 2017 HFNC 56 56.31 ± 7.03 54 26.32 ± 4.73 NA 18.43 ± 3.45 350 ± 33.87 41.73 ± 6.33
SO 54 55.82 ± 7.92 52 25.19 ± 5.02 NA 17.98 ± 3.87 341 ± 40.65 43.52 ± 4.93
Jaber 2016 NIV 148 62.5 ± 14.5 78.4 27.2 ± 5.9 33.6 ± 12.8 28.2 + 7.7 201 ± 69 39 ± 7
SO 145 64.4 ± 13.1 74.5 27.1 ± 6.2 33.4 ± 11.7 28.8 + 7.3 188 ± 71 37 ± 7
Gupta 2016 HFNC 10 NA NA NA NA NA NA NA
NIV 10 NA NA NA NA NA NA NA
Futier 2016 HFNC 108 62 ± 12 56 25 ± 4 NA NA NA NA
SO 112 61 ± 13 57 25 ± 4 NA NA NA NA
Stephan 2015 NIV 416 63.9 (62.6–65.2) 67 28.2 (27.6–28.7) 28.8 (27.7–30.0) 23.2 (22.6–24.0) 203 (195–212) 39.1 (38.4–39.8)
HFNC 414 63.8 (62.5–65.2) 66 28.3 (27.8–28.8) 29.0 (27.8–30.1) 22.8 (22.1–23.5) 196 (187–204) 38.7 (38.1–39.4)
Zhu 2013 NIV 48 62 ± 10.3 66 25.3 ± 4.6 NA 28.3 ± 8.6 NA 38.9 ± 12.2
SO 47 61 ± 12.2 57 24.4 ± 3.5 NA 25.4 ± 6.7 NA 38.3 ± 11.3
Squadrone 2005 NIV 105 66 ± 9 68 26.5 ± 4.7 27 ± 7 NA 247 ± 33 39 ± 7
SO 104 65 ± 10 62 26.3 ± 4.5 28 ± 8   255 ± 31 39 ± 5
Aurian 2001 NIV 24 58.9 ± 10 NA NA 16.9 ± 5.4 26.25 ± 13.2 124 ± 50.2 63.9 ± 20.5
SO 24 63 ± 9 NA NA 16.8 ± 4.4 29.5 ± 6.9 111 ± 54.3 43.4 ± 9.3
Antonelle 2000 NIV 20 45 ± 19 65 NA NA 38 ± 3 NA 42 ± 10
SO 20 44 ± 10 60 NA NA 37 ± 1 NA 38 ± 10
  1. Data are provided percent (%), mean ± SD, or median (interquartile range)
  2. HFNC high-flow nasal cannula, SO standard oxygen, NIV non-invasive ventilation, BMI body mass index, SAPS simplified acute physiology score, PaO2/FiO2 partial pressure of arterial oxygen to fraction of inspired oxygen ratio, PaCO2 partial pressure of arterial carbon dioxide, NA not available