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Table 1 Demographic data

From: Perioperative goal-directed hemodynamic therapy based on radial arterial pulse pressure variation and continuous cardiac index trending reduces postoperative complications after major abdominal surgery: a multi-center, prospective, randomized study

  Control group (n = 81) Study group (n = 79) P- value
Agea (years) 65 (18.25) 63 (17) 0.765
Male: female 50: 31 47: 32 0.899
Heightb (m) 171.7 ± 9.4 170 ± 9.2 0.241
ABWb (kg) 79.2 ± 18.1 77.4 ± 20.4 0.557
PBWb (kg) 66.0 ± 10.1 64.3 ± 10.1 0.269
ASA III 33 33 0.978
POSSUM physiologicala 17 (7) 16 (5) 0.921
POSSUM operativea 17 (9) 15 (8.75) 0.067
Type of surgery (number of patients)    
   Bowel 41 47 0.332
   Non-bowel 40 32 0.332
Duration of surgery (minutes) 237.5 ± 109.8 221.9 ± 86.4 0.321
  1. Data are median (IQR)a or mean ± SDb. Data were compared using Student’s t-test, Mann–Whitney U-test, χ2-test or Fisher’s exact test as appropriate to detect potential preoperative differences between the two groups. ABW, actual body weight; ASA, physical status classification system by the American Society of Anesthesiologists; PBW, predicted body weight: PBWmale = 45.5 + 0.91*(height(cm)-152.4), PBWfemale = 50 + 0.91*(height(cm)-152.4); POSSUM, Physiological and Operative Severity Score for the Enumeration of Mortality and Morbidity.