Table 1

Patient and operative characteristics for the analysis dataset (n=107 038)

CharacteristicsCategoryFrequency (percentage)
Patient characteristics
Age at admission (years)18–361 883 (1.76)
36–5615 149 (14.15)
*Mean: 66.20 (11.31)56–6628 502 (26.63)
Median: 6866–7639 720 (37.11)
IQR: 60–7476–8620 682 (19.32)
86–961 102 (1.03)
GenderMale78 261 (73.12)
Female28 774 (26.88)
Unknown3 (<0.01)
EuroSCORE (probability)0–0.187 559 (81.80)
*Mean: 0.0690 (0.0896)0.1–0.212 515 (11.69)
Median: 0.04000.2–0.33693 (3.45)
IQR: 0.0208–0.0777≥0.33271 (3.06)
Operative characteristics
PriorityElective74 909 (69.98)
Urgent28 312 (26.45)
Emergency3525 (3.30)
Salvage252 (0.23)
Unknown40 (0.04)
Operation typeCABG (isolated)56 586 (52.87)
AVR (isolated)9719 (9.08)
MVR+other6178 (5.77)
CABG+AVR8594 (8.03)
CABG+other procedures2204 (2.06)
CABG+other valve2860 (2.67)
Other procedures3800 (3.55)
AVR+other procedures2511 (2.34)
CABG+AVR+other procedures1292 (1.21)
Valve alone5788 (5.41)
Valve+other procedures1542 (1.44)
Unknown5964 (5.57)
  • *For continuous variables, the mean (SD), median and IQR are shown and their intervals are given under the column ‘Category’.

  • AVR, aortic valve replacement or repair; CABG, coronary artery bypass grafting; MVR, mitral valve replacement or repair.