Table 1.
Statistics for the two datasets on DRG.
| Train set | Test set | Test cohort | |
|---|---|---|---|
| MS-DRG | |||
| Patient | 14,836 | 1648 | 1648 |
| Hospital stay | 17,815 | 1977 | 1648 |
| Unique DRG | 595 | 369 | 349 |
| DRG weight | 3·045 (2·747) | 3·049 (2·790) | 3·147 (2·835) |
| Stay of MDC 05 | 4633 (26·0%) | 522 (26·4%) | 456 (27·7%) |
| Stay of MDC 01 | 2765 (15·5%) | 320 (16·2%) | 293 (17·8%) |
| Stay of MDC 04 | 2115 (11·9%) | 219 (11·1%) | 169 (10·3%) |
| APR-DRG | |||
| Patient | 20,266 | 2252 | 2252 |
| Hospital stay | 24,667 | 2747 | 2252 |
| Unique DRG | 893 | 517 | 480 |
| DRG weight | 3·265 (3·166) | 3·291 (3·211) | 3·300 (3·153) |
| Stay of MDC 05 | 6473 (26·2%) | 733 (26·7%) | 613 (27·2%) |
| Stay of MDC 01 | 3556 (14·4%) | 424 (15·4%) | 379 (16·8%) |
| Stay of MDC 04 | 2881 (11·7%) | 319 (11·6%) | 239 (10·6%) |
Data is reported in count (%) or mean (SD). DRG is assigned on the basis of hospital stay, and a patient can have more than one stay in both datasets. Each unique DRG code in MS-DRG corresponds to the DRG group, whereas in APR-DRG the DRG code combines clinical group and patient severity. All DRG codes have a relative weight that is connected to reimbursement. Three most common MDCs: diseases of disorders of the circulatory system (05), nervous system (01), and respiratory system (04).
DRG diagnostic-related group, SD standard deviation, MS-DRG Medicare severity-DRG, APR-DRG all patient refined-DRG, MDC major diagnosis category.