RISK VARIABLE

Count

% of Pop.

Mortality w/Variable Present

Mortality w/Variable Absent

 Relative Risk

 c² p-Value

Blood Cardioplegia

14,482

60.65%

1,417/14,482

9.78%

761/9,395

8.10%

1.21

0.0000

Cryst Cardioplegia

4,477

18.75%

356/4,477

7.95%

1,822/19,400

9.39%

0.85

0.0026

O2 Cryst Cardioplegia

609

2.55%

67/609

11.00%

2,111/23,268

9.07%

1.21

0.1026

Antegrade Cardioplegia

15,376

64.40%

1,394/15,376

9.07%

784/8,501

9.22%

0.98

0.6878

Retrograde Cardioplegia

9,902

41.47%

1,104/9,902

11.15%

1,074/13,975

7.69%

1.45

0.0000

Warm Cardioplegia

4,826

20.21%

532/4,826

11.02%

1,646/19,051

8.64%

1.28

0.0000

Cold Cardioplegia

16,533

69.24%

1,535/16,533

9.28%

643/7,344

8.76%

1.06

0.1901

Inotropes Leaving OR

10,705

44.83%

1,416/10,705

13.23%

762/13,172

5.78%

2.29

0.0000

Antiarrhy Leaving OR

1,887

7.90%

354/1,887

18.76%

1,824/21,990

8.29%

2.26

0.0000

Atrial Pacing

4,572

19.15%

623/4,572

13.63%

1,555/19,305

8.05%

1.69

0.0000

Ventriclar Pacing

4,079

17.08%

638/4,079

15.64%

1,540/19,798

7.78%

2.01

0.0000

IntraOp IABP

951

3.98%

394/951

41.43%

1,784/22,926

7.78%

5.32

0.0000