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Table 1 Balance of patient characteristics (n = 1961)

From: The use of both internal thoracic arteries for coronary revascularization increases the estimate of post-operative lower limb ischemia in patients with peripheral artery disease

  Unweighted ATT Weighted
  LITA
n = 1768
BITA
n = 193
std.eff.sz LITA
n = 1768
BITA
n = 193
std.eff.sz
Age 70.44 70.48 0 70.6 70.48 −0.02
Gender (Male) 0.81 0.77 −0.09 0.79 0.77 −0.04
Hypercholesterolemia 0.65 0.68 0.05 0.68 0.68 −0.01
Hypertension 0.79 0.81 0.05 0.81 0.81 0.01
COPD 0.1 0.12 0.05 0.11 0.12 0.04
Diabetes 0.4 0.42 0.05 0.41 0.42 0.02
Diabetes with Insulin 0.18 0.18 0 0.18 0.18 −0.01
Dialysis 0.02 0.04 0.11 0.02 0.04 0.11
AKD 0.1 0.09 −0.05 0.08 0.09 0.04
Active Smoke 0.55 0.57 0.04 0.57 0.57 0.01
Stroke History 0.06 0.04 −0.11 0.04 0.04 0
TIA History 0.07 0.09 0.06 0.08 0.09 0.03
Carotid Stenosis > 50% 0.14 0.18 0.1 0.16 0.18 0.06
Antiplatelet drugs 0.3 0.27 −0.08 0.28 0.27 −0.02
LVEF 50.16 51.28 0.1 51.27 51.28 0
NYHA ≥3 0.26 0.26 0 0.26 0.26 0
IABP 0.02 0.02 −0.04 0.01 0.02 0.02
Previous PTCA 0.37 0.42 0.11 0.42 0.42 0.02
LAD Stenosis 0.93 0.94 0.05 0.94 0.94 0.01
MCA Stenosis 0.38 0.4 0.06 0.4 0.4 0.01
Three vessels disease 0.71 0.76 0.13 0.76 0.76 0
Two vessels disease 0.29 0.22 −0.17 0.23 0.22 −0.02
Pulmonary Hypertension 0.08 0.08 0.01 0.06 0.08 0.08
REDO 0.15 0.12 −0.09 0.12 0.12 0
Surgery
 Elective 0.63 0.65 0.04 0.66 0.65 −0.03
 Urgency 0.05 0.06 0.02 0.04 0.06 0.07
 Emergency 0.32 0.3 −0.05 0.3 0.3 0
  1. Abbreviations: LITA Left internal thoracic artery; BITA Bilateral internal thoracic artery; COPD Chronic obstructive pulmonary disease; AKD Acute kidney disease; TIA Transient ischemic attack; LVEF Left ventricular ejection fraction; NYHA New York heart association (functional class); IABP Intra-aortic balloon pump; PTCA Percutaneous transluminal coronary angioplasty; LAD Left anterior descending; MCA Main coronary artery. REDO Re-operative surgery