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Table 1 Characteristics of Unmatched and Propensity Matched Patients

From: Does full sternotomy have more significant impact than the cardiopulmonary bypass time in patients of mitral valve surgery?

Characteristics Unmatched Patients(n = 1120) Matched Patients(n = 165)
Sternotomy(n = 837) MIMVS(n = 283) p Value Sternotomy(n = 165) MIMVS(n = 165) p Value
Age (years) 57.5 ± 8.3 46.7 ± 7.2 0.000 52.6 ± 7.0 51.5 ± 6.8 0.1486
Sex (female) 485(57.9%) 108(38.2%) 0.000 56(33.9%) 58(35.2%) 0.817
Body mass index 25.2 ± 2.2 24.5 ± 1.3 0.000 25.6 ± 2.0 25.5 ± 2.0 0.6500
Rheumatic valvular disease (n) 468(55.9%) 162(57.2%) 0.384 94(57.0%) 96(58.2%) 0.487
Hypertension 302(36.1%) 60(21.2%) 0.000 36(21.8%) 35(21.2%) 0.893
Diabetes mellitus 143(17.1%) 56(19.8%) 0.304 30(18.1%) 31(18.8%) 0.887
Preoperative creatinine (mg/dL) 0.72 ± 0.19 0.77 ± 0.10 0.000 0.74 ± 0.13 0.75 ± 0.12 0.4683
LVEF, % 56.7 ± 6.9 61.6 ± 4.7 0.000 59.2 ± 4.2 59.5 ± 4.0 0.5069
Current congestive heart failure 259(30.9%) 51(18.0%) 0.000 38(23.0%) 36(21.8%) 0.792
History of AF 378(45.2%) 85(30.0%) 0.000 60(36.4%) 58(35.2%) 0.818
COPD 134(16.0%) 26(9.2%) 0.005 20(12.1%) 18(10.9%) 0.730
Cerebrovascular disease 76(9.1%) 14(4.9%) 0.027 11(6.7%) 10(6.1%) 0.822
preoperative NYHA functional class 2.6 ± 0.6 2.1 ± 0.5 0.0000 2.3 ± 0.5 2.3 ± 0.4 1.0000
NYHA III-IV functional class, n (%) 242(28.9%) 43(15.2%) 0.000 34(20.6%) 32(19.4%) 0.783
Pulmomary Hypertension (≥60 mmHg) 252(30.1%) 78(27.6%) 0.417 47(28.5%) 46(27.9%) 0.903
EuroSCORE I 6.5 ± 1.0 4.8 ± 0.8 0.000 5.9 ± 0.9 5.8 ± 0.8 0.287
  1. AF = atrial fibrillation; COPD = chronic obstructive pulmonary disease; NYHA = New York Heart Association; EuroSCORE I = European System for Cardiac Operative Risk Evaluation, version I