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Table 7 Characteristics of improvers and non-improvers group

From: Health-related quality of life after cardiac surgery – the effects of age, preoperative conditions and postoperative complications

  Improvers Non-improvers  
  n = 218 n = 42  
Variables Mean SD Mean SD p-value
Ejection fraction (%) 61.0 11.4 61.2 11.5 0.93
Age 65.6 9.5 63.3 10.0 0.17
BMI 29.3 4.6 30.0 5.2 0.4
ICU stay time (days) 3.2 2.8 3.3 1.9 0.75
Hospital stay time (days) 9.1 5.4 11.5 8.8 0.09
Preoperative PCS 40.9 23.6 66.5 23.7 <0.001
Postoperative PCS 66.5 23.3 46.2 20.2 <0.001
Preoperative MCS 52.1 23.2 74.9 20.0 <0.001
Postoperative MCS 73.9 18.8 54.1 22.4 <0.001
  1. BMI – Body mass index, ICU – Intensive care unit, PCS – Physical component summary, MCS – Mental component summary.