Table 2.
Baseline characteristics between training set and test set
| Train set | Test set | P-value | |||
|---|---|---|---|---|---|
| Data source | eICU-CRD | MIMIC-III | |||
| Number of hospitals | 198 | 1 | |||
| Number of patients | 12,558 | 12,095 | |||
| Unit type, n (%) | Med-Surg ICU | 8255 (65.7) | MICU | 4938 (40.8) | |
| MICU | 1479 (11.8) | SICU | 1839 (15.2) | ||
| CCU | 927 (7.4) | CCU | 1328 (11.0) | ||
| CCU-CTICU | 775 (6.2) | CSRU | 2459 (20.3) | ||
| SICU | 541 (4.3) | TSICU | 1531 (12.7) | ||
| NICU | 302 (2.4) | ||||
| CSICU | 135 (1.0) | ||||
| CTICU | 144 (1.1) | ||||
|
SOFA score (mean (SD)) |
5.3 (2.8) | 5.5 (3.1) | < 0.001 | ||
| Length of ICU stay (hours, median [IQR]) | 70.0 [43.0, 127.0] | 74.0 [43.9, 155.8] | < 0.001 | ||
| Hospital mortality (%) | 17.9 | 17.9 | 0.999 | ||
Abbreviations: SD standard deviation, IQR interquartile range, CCU cardiac care unit, CSICU cardiac surgical intensive care unit, CSRU cardiac surgery recovery unit, CTICU cardiothoracic intensive care unit, MICU medical intensive care unit, NICU neuro-intensive care unit, SICU surgical intensive care unit, TSICU trauma surgical intensive care unit