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Table 1 Baseline characteristics before and after propensity score matching

From: Do obese patients benefit from isolated aortic valve replacement through a partial upper sternotomy?

Variable

All patients

Propensity matched patients

con-AVR (n = 98)

mini-AVR (n = 86)

P-value

con-AVR (n = 60)

mini-AVR (n = 60)

P-value

Age, mean ± SD

57.8 ± 12.3

62.9 ± 10.7

 <  0.001

60.1 ± 10.9

60.6 ± 11.3

.878

Male [n (%)]

58(59.2)

46(53.5)

.343

32 (67)

28 (61)

.465

BMI, kg/m2, mean ± SD

35.5 ± 4.2

38.3 ± 5.3

 <  0.001

35.9 ± 4.5

34.9 ± 5.1

.762

BMI > 40 kg/m2 [n (%)]

8 (8.1)

6 (6.9)

.731

6 (10.0)

5 (8.3)

.751

EuroScore, median (IQR)

7 (3–12)

7 (3–11)

.871

7 (3–11)

7 (3–11)

1.000

Ejection fraction (EF), % median [IQR]

60 (50–65)

59 (49–64)

.256

60 (52–65)

60 (55–66)

.576

History of AF [n (%)]

9 (9.1)

9 (10.4)

.965

7 (11.7)

6 (10.0)

1.000

Diabetes mellitus [n (%)]

8 (8.1)

6 (6.9)

.731

6 (10.0)

5 (8.3)

.751

Hypertension [n (%)]

62 (63.2)

52 (60.4)

.564

46 (76.7)

43 (71.7)

.531

Cerebrovascular disease [n (%)]

5 (5.1)

5 (5.8)

.909

3 (5.0)

2 (3.3)

1.000

COPD [n (%)]

5 (5.1)

4 (4.6)

1

2 (3.2)

2 (3.2)

1.000

Smoking history [n (%)]

34 (34.7)

29 (33.7)

.850

21 (35.0)

20 (33.3)

.847

Hb (mg/dl), mean ± SD

12.22 ± 1.35

13.68 ± 1.68

 <  0.001

12.48 ± 1.65

13.12 ± 1.55

.534

HCT (%), mean ± SD

38.32 ± 4.68

41.32 ± 3.68

 <  0.001

39.82 ± 3.78

40.32 ± 3.65

.337

  1. BMI body mass index, SD standard deviation; IQR interquartile range, AF atrial fibrillation, COPD chronic obstructive pulmonary disease, Hb haemoglobin, HCT haematocrit