Table 1 Preoperative patient characteristics.

From: Long Term Outcomes of The Off-Pump and On-Pump Coronary Artery Bypass Grafting In A High-Volume Center

variable

measure

Unmatched

Matched

0FF pump N = 143

ON N = 159

p

0FF N = 143

ON N = 143

p

Sex

n (%)

  

0.830

  

1.000

   male

 

105 (73.4)

115 (72.3)

 

105 (73.4)

105 (73.4)

 

   female

 

38 (26.6)

44 (27.2)

 

38 (26.6)

38 (26.6)

 

Age

mean ± sd

63.8 ± 8.7

63.4 ± 8.2

0.684

63.8 ± 8.7

63.8 ± 8.3

1.000

BMI

mean ± sd

27.3 ± 4.2

27.1 ± 4.0

0.540

27.3 ± 4.2

27.1 ± 4.0

0.613

HGB

mean ± sd

127.8 ± 16.4

129.9 ± 16.4

0.264

127.8 ± 16.4

130.6 ± 16.5

0.153

HTA

n (%)

138 (96.5)

153 (96.2)

0.898

138 (96.5)

139 (97.2)

0.735

HLP

n (%)

111 (77.6)

126 (79.2)

0.732

111 (77.6)

114 (79.7)

0.665

DM

n (%)

56 (39.2)

43 (27.0)

0.025

56 (39.2)

43 (30.1)

0.106

CRF

n (%)

28 (19.6)

9 (5.7)

<0.001

28 (19.6)

9 (6.3)

0.001

COPD

n (%)

7 (4.9)

11 (6.9)

0.458

7 (4.9)

10 (7.0)

0.453

PVD

n (%)

12 (8.4)

10 (6.3)

0.483

12 (8.4)

9 (6.3)

0.496

IM

n (%)

81 (56.6)

97 (61.0)

0.442

81 (56.6)

90 (62.9)

0.278

PCI

n (%)

76 (53.1)

72 (45.3)

0.172

76 (53.1)

66 (46.2)

0.237

ATRIAL FIBRILATION

n (%)

77 (53.8)

76 (47.8)

0.294

77 (53.8)

70 (49.0)

0.408

CVA

n (%)

10 (7.0)

8 (5.0)

0.472

10 (7.0)

7 (4.9)

0.453

Number of grafts

   

0.077

  

0.051

   1

 

20 (14.0)

10 (6.3)

 

20 (14.0)

8 (5.6)

 

   2

 

22 (15.4)

24 (15.1)

 

22 (15.4)

21 (14.7)

 

   3

 

101 (70.6)

125 (78.6)

 

101 (70.6)

114 (79.7)

 

Ejection fraction

mean ± sd

45.5 ± 14.3

53.5 ± 10.8

<0.001

45.5 ± 14.3

52.1 ± 10.4

<0.001

EF

n (%)

  

<0.001

  

<0.001

   low

 

58 (40.6)

14 (8.8)

 

58 (40.6)

14 (9.8)

 

   normal

 

85 (59.4)

145 (91.2)

 

85 (59.4)

129 (90.2)

 

Euroscore

mean ± sd

3.0 ± 2.7

1.9 ± 3.2

<0.001

3.0 ± 2.7

2.0 ± 3.3

<0.001

STS score

mean ± sd

7.7 ± 5.6

3.2 ± 4.9

<0.001

7.7 ± 5.6

3.3 ± 5.1

<0.001

  1. BMI, body mass index; CRF, chronic renal failure; COPD, chronic obstructive pulmonary disease; CVA, cerebrovascular accident; MI, myocardial infarction; PCI, percutaneous coronary intervention medn, median QRT, quartiles; SD, standard deviation.