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Table 2 Resource consumption in fEVAR and OSR patients

From: Decision uncertainty and value of further research: a case-study in fenestrated endovascular aneurysm repair for complex abdominal aortic aneurysms

  fEVAR OSR Pooled WMD (95% CI)
N Mean (SD) N Mean (SD)
Length of stay (days)  
 Moore 2006 16 14.8 (17.3) 29 13 (8.0) − 4.83 (− 7.33 to − 2.32) I2 = 87.4% p < 0.0001
 Donas 2012 29 3.5 (1.1) 31 7.2 (3.2)
 Canavati 2013c 53 7.0 (3.3) 54 12 (9.6)
 Tsilimparis 2013 246 3.0 (4.3) 1091 10 (9.6)
Operative time (min)
 Moore 2006 16 268 (113.0) 29 205 (196.0) 38.72 (− 79.00 to 156.44) I2 = 98.6% p < 0.0001
 Chisci 2009* 52 266 (94) 61 150 (38)
 Donas 2012 29 290 (122.0) 31 204.00
 Canavati 2013 53 300 (88.9) 54 235 (66.7)
 Tsilimparis 2013 246 175.7 (101.8) 1091 260.57 (109.0)
Blood unit transfusedb
 Moore 2006 16 4.4 (5.8) 29 6.5 (5.8) − 2.41 (− 2.72 to − 2.11) I2 = 16.1% p = 0.311
 Chisci 2009ac 52 1.12 (0.95) 61 3.45 (1.24)
 Donas 2012 29 0.2 31 3.2 (1.2)
 Canavati 2013ac 53 2.8 (2.2) 54 4.4 (3.1)
 Tsilimparis 2013 246 0.5 (1.9) 1091 3.1 (4.0)
ICU stay (days)
 Moore 2006 16 4 (8.5) 29 1.7 (2.7) − 0.88 (− 6.8 to 5.04) I2 = 79.2% p = 0.028
 Canavati 2013ac 53 0.58 (7.8) 54 4.33 (26.7)
  1. ICU intensive care unit; WMD weighted mean difference
  2. aMedian instead of mean
  3. b450 ml blood per unit
  4. cIQR = 1.35*SD as in normal distribution