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Table 1 Demographics and baseline hemodynamic data after propensity match a

From: Closed-loop assisted versus manual goal-directed fluid therapy during high-risk abdominal surgery: a case–control study with propensity matching

Parameter Manual Closed-loop assisted Absolute standardized difference (%)*
Age (yr) 61.5 ± 11.4 61.6 ± 12.8 1.3
Height (cm) 166 ± 10 166 ± 12 3.5
Weight (kg) 73.9 ± 17.5 73.9 ± 23.7 0.2
Sex    
 Male 11 11 0.0
 Female 14 14  
Specific surgical procedure    
 Whipple 6 6 0.0
 Whipple + additional 6 6  
 Distal pancreatectomy 3 3  
 Liver resection 8 8  
 Complex cholecystectomy 2 2  
ASA Physical Status patient classification    
  2 1 1 0.0
  3 21 21  
  4 3 3  
Baseline hemodynamic data    
 Heart rate (bpm) 72 ± 12 73 ± 10 7.0
 Mean arterial pressure (mmHg) 88 ± 11 88 ± 10 5.5
 Stroke Volume Index 44 ± 12 44 ± 10 1.2
 Cardiac Index 3.1 ± 0.9 3.1 ± 0.8 4.8
  1. abpm, Beats per minute. Data are expressed as mean ± standard deviation for scalar data or as counts for categorical data. * Absolute standardized difference >10% is considered a significant imbalance in matching.