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Table 1 Base-line characteristics of the study groups

From: A comparison of off-pump and on-pump coronary bypass surgery in patients with low EuroSCORE

Characteristics OPCAB group (n = 395) On-pump group (n = 83) p
Age (years) 54.7 ± 7.27 54.02 ± 7 0.353
Male Sex 358 (90.6) 75 (90.4) 0.939
BMI (kg/m 2 ) 27.59 ± 3.24 27.06 ± 3.36 0.194
EuroSCORE (add) 1.03 ± 0.82 0.86 ± 0.80 0.090
EuroSCORE (log) 1.24 ± 0.30 1.17 ± 0.30 0.053
CCA Class 1 5 (1.3) 0 (0.0) 0.024*
Class 2 75 (19.0) 11 (13.3) 0.173
Class 3 223 (56.5) 52 (62.7) 0.291
Class 4 92 (23.3) 20 (24.1) 0.876
Recent MI (<90 days) 53 (13.4) 12 (14.5) 0.802
PCI 17 (4.3) 6 (7.2) 0.261
Current smoker 294 (74.4) 63 (75.9) 0.779
Family history 206 (52.2) 52 (62.7) 0.081
Diabetes mellitus 106 (26.8) 24 (28.9) 0.699
Dyslipidemia 222 (56.2) 49 (59.0) 0.636
CRF 1 (0.3) 0 (0.0) 0.646
Hypertension 209 (52.9) 47 (56.6) 0.537
CVD 1 (0.3) 2 (2.4) 0.079
COPD 3 (0.8) 4 (4.8) 0.020*
PVD 8 (2) 2 (2.4) 0.687
Carotid artery disease 4 (1) 1 (1.2) 1.000
LMCA 36 (9.1) 8 (9.6) 0.881
One Vessel disease 27 (6.8) 2 (2.4) >0.05
Two Vessel disease 132 (33.4) 17 (20.5) 0.010*
Three Vessel disease 236 (59.7) 64 (77.1) 0.010*
Normal left ventricular function 303 (76.7) 70 (84.3) 0.127
Moderate left ventricular function 92 (23.3) 13 (15.7) 0.010*
  1. *Statistically significant difference.
  2. Values are presented as mean ± standard deviation or number (%), where appropriate. OPCAB, off-pump coronary artery bypass surgery; CPB, cardiopulmonary bypass; BMI, body mass index; EuroSCORE, European System for Cardiac Operative Risk Evaluation (add: additive, log: logarithmic); CCA, Canadian Class of Angina; MI, myocardial infarction; PCI, percutaneous coronary intervention; CRF, chronic renal failure; CVD, cerebrovascular disease; COPD, chronic obstructive pulmonary disease; PVD, peripheral vascular disease; LMCA, left main coronary artery; LVEF, left ventricular ejection fraction.