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Table 2. Mortality by Procedure
Table of PR1 by DIED
Principal procedure
DIED
Total
Frequency
Row Pct
Col Pct
0
1
3610
8
100.00
0.02
0
0.00
0.00
8
3611
4995
97.85
11.15
110
2.15
11.09
5105
3612
13104
97.79
29.25
296
2.21
29.84
13400
3613
12860
97.82
28.70
287
2.18
28.93
13147
3614
7004
97.37
15.63
189
2.63
19.05
7193
3615
6309
98.42
14.08
101
1.58
10.18
6410
3616
500
98.43
1.12
8
1.57
0.81
508
3617
3
100.00
0.01
0
0.00
0.00
3
3619
23
95.83
0.05
1
4.17
0.10
24
Total
44806
992
45798
Frequency Missing = 109
univar totchg/gridl= 20000 gridu= 100000 out=nis.kdecardchg bwm= .9 ;
by pr1;
run;
The costs can vary considerably by procedure, and there is also considerable variability within each
procedure.
It appears that 3610 has the highest cost followed by 3619 and 3616. However, at the same time, 3610
has a small probability of a stay beyond 9 days while procedures 3615 and 3616 have a much higher
probability of a length of stay beyond 12 days.
We want to examine the relationship between procedure and hospital. We want to look at a list of
ten hospitals that perform cardiovascular surgery. Therefore, we pick a random list of ten hospitals that
are specific to this type of surgery. Table 4 shows the relationship of hospital to procedure. It shows
 
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