Table 2.
Cohort Characteristics.
| Model data | External Validation data | |
|---|---|---|
| Period | 12 months | 6 months |
| Number of patients | 51240 | 35480 |
| Gender | ||
| Male | 21031 | 15118 |
| Female | 30209 | 20362 |
| Age at laboratory tests (mean ± SD) | 59.0 ± 18.5 | 59.1 ± 18.5 |
| Number of laboratory tests | 223422 | 112008 |
| Number of laboratory test items | 7691243 | 3889926 |
| Number of laboratory tests by patient location | ||
| Outpatient | 169743 | 84773 |
| General ward | 42089 | 21793 |
| Intensive care unit | 10944 | 5155 |
| Palliative care unit | 646 | 287 |
| Number of laboratory tests by requesting department | ||
| Obstetrics and gynecology | 36946 | 18105 |
| Immuno-Rheumatology | 22013 | 11000 |
| Cardiology | 20785 | 10208 |
| Nephrology | 15464 | 8158 |
| Emergency room | 12044 | 6181 |
| Urology | 11815 | 5731 |
| Endocrinology | 11772 | 6002 |
| Gastroenterology | 11509 | 5999 |
| Hematology | 10493 | 5036 |
| Anesthesiology | 10110 | 5012 |
| Oncology | 10004 | 5188 |
| Respiratory medicine | 9351 | 4795 |
| Internal medicine | 9177 | 4569 |
| Breast surgery | 8480 | 3680 |
| General surgery | 6167 | 3157 |
| Infectious disease | 5821 | 2651 |
| Cardiovascular surgery | 4518 | 2668 |
| Orthopedics | 4423 | 2310 |
| Dermatology | 3345 | 1685 |
| Neurosurgery | 3114 | 1814 |
| Neurology | 2313 | 1041 |
| Psychiatry | 1329 | 729 |
| Thoracic surgery | 1324 | 765 |
| Ophthalmology | 1158 | 566 |
| Plastic surgery | 942 | 499 |
| Neurovascular | 774 | 275 |
| Palliative care | 693 | 312 |
| Otorhinolaryngology | 686 | 412 |
| Oral surgery | 212 | 123 |
| Radiology | 156 | 43 |
| Others | 373 | 264 |
| Number of laboratory tests with critical values | 20297 | 9948 |
| Number of deceased patients | 522 | 260 |
| Number of laboratory tests conducted within 7 days of death | 1334 (0.6%) | 589 (0.5%) |