Table 1.
Demographic characteristics of patients in model training and testing data sets
|
Training data (10,745,181 admissions) |
Test data (987,079 admissions) |
|||
|---|---|---|---|---|
| % of training data | Death rates | % of test data | Death rates | |
| Age distribution |
|
|
|
|
| [0–5] |
10.2% |
0.3% |
8.3% |
0.2% |
| [6-15] |
4.4% |
0.1% |
3.6% |
0.1% |
| [16–35] |
21.9% |
0.1% |
18.6% |
0.1% |
| [36–55] |
25.2% |
0.5% |
23.3% |
0.4% |
| [56–65] |
13.5% |
1.4% |
14.8% |
1.0% |
| [66–75] |
12.8% |
2.8% |
14.8% |
1.7% |
| [76–85] |
9.9% |
6.1% |
13.0% |
3.5% |
| > = 85 |
2.2% |
19.6% |
3.7% |
9.5% |
| Charlson score of comorbidity |
|
|
|
|
| Zero to mild (0) |
68.6% |
0.2% |
65.5% |
0.2% |
| Mild [1,2] |
20.0% |
2.7% |
20.2% |
1.7% |
| Moderate [3,4] |
6.8% |
5.7% |
8.5% |
3.5% |
| Severe [> = 5] |
4.5% |
14.7% |
5.8% |
10.1% |
| Gender |
|
|
|
|
| Female |
54.7% |
1.5% |
53.6% |
1.1% |
| Male |
45.3% |
2.1% |
46.4% |
1.6% |
| Overall death rates |
1.8% |
|
1.3% |
|
| LOS |
|
|
|
|
| Mean/Std. deviation |
3.21/11.42 |
|
2.75/5.134 |
|
| Median |
1.00 |
|
1.00 |
|
| Range |
599 |
|
171 |
|
| Interquartile range | 2 | 1 | ||