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Table 1 Pre-operative patient background

From: Short-term clinical outcomes after off-pump coronary artery bypass grafting at a single Veterans Affairs Medical Center

  Off-pump (n = 170) On-pump (n = 82) p-value
Demographics
 Age (years) 64 ± 9 65 ± 8 0.84
 Gender (male) 169 (99 %) 80 (98 %) 0.51
 BMI (kg/m2) 31 ± 6 31 ± 6 0.81
 Urgent Status 18 (11 %) 15 (18 %) 0.12
 Previous heart surgery 0 0  
 Current smoker 48 (28 %) 9 (11 %) 0.002*
Comorbidities
 COPD 43 (25 %) 14 (17 %) 0.15
 PVD 26 (15 %) 8 (10 %) 0.27
 DM 70 (41 %) 38 (46 %) 0.45
 HTN 161 (95 %) 74 (90 %) 0.13
 CVD 48 (28 %) 12 (15 %) 0.024*
Cardiac function
 LVEF < 45 % 47 (28 %) 11 (13 %) 0.008*
  1. Values are n (%) or mean ± SD. *Statistically significant associations (p < 0.05). BMI body mass index; COPD chronic pulmonary obstructive disease; PVD peripheral vascular disease; DM diabetes mellitus; HTN hypertension; LVEF left ventricular ejection fraction; CVD cerebrovascular disease