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Table 1 Baseline characteristics before and after PS matching

From: Comparison of early outcomes associated with coronary artery bypass grafting for multi-vessel disease conducted using minimally invasive or conventional off-pump techniques: a propensity-matched study based on SYNTAX score

Characteristics Unadjusted After PS matching
OPCABG (n = 371) MICS (n = 211) Standardized Difference OPCABG (n = 172) MICS (n = 172) Standardized Difference
Age 61.6 ± 8.8 58.6 ± 9.3 33.10 60.2 ± 9.1 60.2 ± 8.9 0.00
Male 274 (74) 185 (88) 35.64 140 (81) 146 (85) 9.30
BMI 25.7 ± 3.4 25.4 ± 3.0 7.91 25.4 ± 3.0 25.6 ± 3.0 7.03
LVEDD 50.0 ± 6.5 48.8 ± 4.4 21.32 48.3 ± 6.0 49.1 ± 4.5 9.27
LVEDS 33.9 ± 6.9 32.1 ± 4.3 32.54 31.8 ± 5.2 32.5 ± 4.4 9.87
EF 57.8 ± 10.0 62.1 ± 6.0 52.70 62.0 ± 7.4 61.1 ± 5.7 9.90
LITA D 0.21 ± 0.04 0.21 ± 0.03 0.00 0.21 ± 0.03 0.21 ± 0.03 0.00
LITA V 74.6 ± 19.6 74.1 ± 19.1 2.79 75.1 ± 21.4 74.3 ± 19.9 5.70
Target vessels 3.2 ± 0.7 2.9 ± 0.8 41.81 3.1 ± 0.7 3.0 ± 0.8 9.83
SYNTAX score 45.6 ± 15.3 40.5 ± 15.9 32.51 42.6 ± 14.0 42.2 ± 15.8 2.41
History of PCI 55 (15) 39 (18) 9.84 27 (16) 30 (17) 4.68
History of MI 65 (18) 35 (17) 2.47 28 (16) 31 (18) 4.62
Hypertension 232 (63) 122 (58) 9.63 105 (61) 104 (61) 1.19
Diabetes 146 (39) 82 (39) 1.00 66 (38) 70 (41) 4.77
CLD 63 (17) 34 (16) 2.34 27 (16) 32 (19) 7.70
Cerebrovasc 58 (16) 33 (16) 0.03 27 (16) 26 (16) 1.63
Creatinine 80.1 ± 71.4 73.7 ± 18.2 12.25 74.1 ± 18.9 74.4 ± 19.5 1.56
  1. BMI body mass index (kg/m.2), LVEDD left ventricular end diastolic diameter (cm), LVEDS left ventricular end systolic diameter (cm), EF ejection fraction (%), LITA D diameter of LITA (cm), LITA V velocity of LITA (cm/s), Target vessels target vessels number, MI myocadial infarction, CLD chronic lung disease history, Cerebrovasc cerebrovascular abnormal sign of head CT, Creatinine preoperative creatinine (umol/L)