The Charlson Comorbidity Index - Text Mining Techniques for Healthcare Provider Quality Determination - page 159

Table 2. Mortality by Charlson index

Charlson Index DIED Total

Frequency
Row Pct
Col Pct

0 1

0 4506290

99.30
57.59

31815
0.70
19.03

4538105

1 1664508

97.43
21.27

43878
2.57
26.25

1708386

2 890356

96.08
11.38

36325
3.92
21.73

926681

3 446533

94.12
5.71

27891
5.88
16.69

474424

4 181510

92.40
2.32

14938
7.60
8.94

196448

5 76798

91.69
0.98

6962
8.31
4.17

83760

6 39256

92.14
0.50

3347
7.86
2.00

42603

7 12066

91.49
0.15

1122
8.51
0.67

13188

8

5134
90.34
0.07

549
9.66
0.33

5683

9 1600

90.14
0.02

175
9.86
0.10

1775

10 557

85.17
0.01

97
14.83
0.06

654

11 187

86.18
0.00

30
13.82
0.02

217

12

52
73.24
0.00

19
26.76
0.01

71

13 10

83.33
0.00

2
16.67
0.00

12

Note that there are only 12 patients with a Charlson value of 13. However, patients with a Charlson
value of 12 have a mortality of 27%, higher than an index value of 13.