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Table 2 Baseline characteristic of study population

From: Evaluation of a novel Cardiac Peri-Operative Transfusion Trigger Scoring system in patients with coronary artery disease

Variables, n (%) cPOTTS group n = 254 Conventional group n = 246 p value
Demographic characteristics
 Age, mean ± SD 63.3 ± 10.8 64.4 ± 10.6 0.246
 Male 165 (65.0) 155 (63.0) 0.649
 Body mass index, mean ± SD 25.20 ± 3.87 25.44 ± 3.81 0.475
NYHA class 0.059
 I 39 (15.4) 22 (8.9) 0.029
 П 121 (47.6) 116 (47.2) 0.914
 Ш 84 (33.1) 102 (41.5) 0.052
 IV 10 (3.9) 6 (2.4) 0.354
Echocardiogram 254 245  
Ejection fraction (%) 56.7 ± 3.3 57.1 ± 3.6 0.564
Coronary artery disease 0.383
 Single-vessel 13 (5.1) 6 (2.4) 0.117
 Double-vessel 41 (16.1) 41 (16.7) 0.874
 Triple-vessel 84 (33.1) 76 (30.9) 0.602
 Not investigated 116 (45.7) 123 (50.0) 0.332
Combined diseases
 Diabetes 82 (32.3) 68 (27.6) 0.258
 Hypertension 139 (54.7) 135 (54.9) 0.972
 COPD 3 (1.2) 6 (2.4) 0.332
 Hemofiltration or dialysis 0 5 (2.0) 0.028
 Cerebrovascular accident /transient ischemic attack 1 (0.4) 3 (1.2) 0.366
 Preoperative Hemoglobin g/L, mean ± SD 114.99 ± 16.55 114.02 ± 19.99 0.555
Drugs taken
 β-Receptor blocker 45 (17.7) 53 (21.5) 0.281
 ACEI 37 (14.6) 32 (13.0) 0.613
 Calcium antagonist 28 (11.0%) 36 (14.6) 0.227
 Aprotinin 119 (46.9) 117 (47.6) 0.874
 Others 39 (15.4) 30 (12.2) 0.306
Type of surgery 0.379
 Cardiac surgery (Coronary artery bypass graft) 110 (43.3) 97 (39.4)  
 Non-cardiac surgery 144 (56.7) 149 (60.6)  
 Hepatobiliary surgery 37 (26.4) 32 (21.5) 0.613
 Gastrointestinal surgery 48 (30.7) 50 (33.6) 0.688
 Gynecological surgery 39 (23.2) 36 (24.2) 0.822
 Urinary surgery 20 (19.7) 31 (20.1) 0.081
  1. Bold indicates statistically significant difference
  2. cPOTTS Cardiac Peri-Operative Transfusion Trigger score, NYHA New York Heart Association, COPD Chronic obstructive pulmonary disease