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Table 6. Disease staging: mortality level
Table of class by DS_Mrt_Level
class
DS_Mrt_Level(Disease Staging: Mortality Level)
Total
Frequency
Row Pct
Col Pct
0
1
2
3
4
5
1
0
0.00
0.00
2
3.57
0.00
3
5.36
0.00
32
57.14
0.00
18
32.14
0.00
1
1.79
0.00
56
2
119109
18.35
8.99
49427
7.62
17.68
355267
54.75
31.98
119793
18.46
3.99
5186
0.80
0.50
153
0.02
0.07
648935
3
339135
35.68
25.61
55948
5.89
20.02
295841
31.13
26.63
243454
25.62
8.10
14941
1.57
1.45
1092
0.11
0.51
950411
4
282584
32.57
21.34
56781
6.54
20.31
161778
18.64
14.56
322487
37.17
10.73
40383
4.65
3.91
3687
0.42
1.72
867700
5
218607
27.28
16.51
43056
5.37
15.40
95251
11.89
8.57
375107
46.81
12.48
63349
7.91
6.14
5896
0.74
2.76
801266
6
151577
20.37
11.45
29371
3.95
10.51
65653
8.82
5.91
400156
53.78
13.31
86952
11.69
8.42
10318
1.39
4.82
744027
7
95487
14.66
7.21
18977
2.91
6.79
47682
7.32
4.29
374958
57.58
12.48
100387
15.42
9.72
13735
2.11
6.42
651226
8
57081
9.87
4.31
11889
2.06
4.25
34762
6.01
3.13
337417
58.37
11.23
118475
20.49
11.47
18485
3.20
8.64
578109
9
33223
6.15
2.51
7299
1.35
2.61
25435
4.71
2.29
303104
56.14
10.09
144562
26.78
14.00
26255
4.86
12.27
539878
10
27533
2.32
2.08
6766
0.57
2.42
29332
2.48
2.64
528838
44.63
17.60
458214
38.67
44.38
134348
11.34
62.79
1185031
Total
1324336
279516
1111004
3005346
1032467
213970
6966639
Note that both figures show that missing values and class 1 with no diagnosis codes have the great-
est variance with respect to patient outcome. For length of stay, class 4 (with 4 diagnosis codes) has the
highest probability of a short length of stay with classes 2 and 3 having the next highest probability.
For total charges (which are entirely controlled by the provider), the probability is ranked in the exact
order as the number of diagnosis codes. It is reasonable that the charges relate to the number of patient
conditions; however, reimbursements and charges are not necessarily the same thing. Length of stay,
however, is usually determined by the physician rather than the hospital, so the hospital has limited
control over costs while being held accountable for them. What is not known is whether patients with
a higher number of diagnoses also have more critical diseases, and are, in fact, sicker. Therefore, we
also consider the classification codes once we restrict all patients to the same number of codes. In this
example, we will remove all patients with fewer than five codes, and we will truncate all codes beyond
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