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Table 1 Data extracted from the literature

From: Meta-analytic estimation of measurement variability and assessment of its impact on decision-making: the case of perioperative haemoglobin concentration monitoring

  Raw SpHb Calibrated SpHb
Series n m sd n m sd
Berkow 2011 29.00 −0.30 1.05    
Causey 2011 25.00 −0.30 1.05    
Lamhaut 2011 44.00 0.00 1.40    
Miller 2011 20.00 0.30 1.79    
Applegate 2012 91.00 0.50 1.43    
Butwick 2012-preop 50.00 1.20 1.07    
Butwick 2012-postop 50.00 0.10 1.28    
Butwick 2012-24 h 50.00 1.40 0.99    
Colquhoun 2012 20.00 −1.30 1.94    
Park 2012 40.00 0.90 1.33    
Vos 2012 30.00 −0.20 1.02    
Dewhirst 2013 45.00 −0.10 1.48    
Giraud 2013 53.00 1.00 1.20    
Isosu 2013 92.00 0.20 1.50 71.00 −0.70 1.10
Skelton 2013-preop 137.00 0.60 1.48    
Skelton 2013-postop 137.00 1.60 1.56    
Toyoda 2014-tHbLow 21.00 1.20 1.10    
Toyoda 2014-tHbMed 155.00 −0.20 1.30    
Toyoda 2014-tHbHigh 49.00 −1.00 1.10    
Miyashita 2014-R1-25 71.00 0.60 0.96 71.00 0.15 0.57
Miyashita 2014-R1-25a 73.00 0.68 1.02 73.00 0.16 0.77
Kim 2014-pre 52.00 0.12 1.09    
Kim 2014-Lefort 52.00 0.07 0.94    
Kim 2014-BSSO 52.00 −0.09 0.98    
Kim2014 post 52.00 −0.90 0.85    
Patino 2014 140.00 0.40 1.28 140.00 0.10 1.20
Yamaura 2014-0-1 115.00 0.33 1.41    
Yamaura 2014-1-2 30.00 −0.31 1.24    
Yamaura 2014-2-3 18.00 −0.59 1.11    
Yamaura 2014-3- 12.00 −0.53 0.87    
Saito 2015-Dilution 24.00 1.43 1.24    
Saito 2015-Transfusion 24.00 1.10 1.23    
Awada 2015-Precision 83.00 0.00 0.79    
Frasca 2015 41.00 −0.40 1.40 41.00 −0.30 1.10
  1. n: sample size, m: mean error (SpHb-tHb), sd: standard deviation of error