Table 1.
Summary of attributes considered for each model.
| Age | Mean | Median | Min/Max | Std. Dev | |
|---|---|---|---|---|---|
| 63 | 64 | 22/89 | 11.4 | ||
| Gender | Male | Female | |||
| 255 | 367 | ||||
| ASA | 1 | 2 | 3 | 4 | |
| 13 | 231 | 371 | 7 | ||
| Ethnicity | Hispanic | Non-Hispanic | |||
| 16 | 606 | ||||
| Smoking status | Non- smoker | Smoker | Former smoker | ||
| 339 | 73 | 210 | |||
| Procedure | Hip | Knee | |||
| 218 | 404 | ||||
| Length of Stay (LOS) (avg hours) | 63.5 | ||||
| Discharge location | Home | HHC | SNF | Rehab | Other |
| 477 | 27 | 32 | 76 | 10 | |
| Diagnosis related group (DRG) | 469 | 470 | |||
| 13 | 609 | ||||
| Readmission count | 30 days | 90 days | |||
| 20 | 48* | ||||
| HOOS/KOOS (average) | Pain | Symptoms | Function daily life | Function sports leisure | Quality of life |
| 39.4 | 43.3 | 40.5 | 20.3 | 21.1 | |
| Supply cost | Mean | ||||
| 4889 | |||||
| ICD-9 count | Mean | Min/Max | Std Dev | ||
| 1.73 |
0/6 |
1.2 |
|
|
|
| Comorbidities |
Total |
|
|
||
| Congestive heart failure (CHF) | 10 | ||||
| Arrhythmia | 75 | ||||
| Valvular disease (Valvular) | 18 | ||||
| Pulmonary hypertension (PHTN) | 11 | ||||
| Peripheral vascular disease (PVD) | 12 | ||||
| Hypertension (HTN) | 371 | ||||
| Paralysis | 0 | ||||
| Other neurological disorder (NeuroOther) | 5 | ||||
| Pulmonary circulation disorder (Pulmonary) | 39 | ||||
| Diabetes mellitus (DM) | 4 | ||||
| DM w/chronic complications (DMcx) | 29 | ||||
| Hypothyroid | 96 | ||||
| Renal failure (Renal) | 22 | ||||
| Liver disease (Liver) | 17 | ||||
| Peptic ulcer disease (PUD) | 3 | ||||
| Human immunodeficiency virus (HIV) | 2 | ||||
| Lymphoma | 11 | ||||
| Metabolic syndrome (Mets) | 1 | ||||
| Solid tumour w/o metastasis (Tumour) | 64 | ||||
| Rheumatic disease (Rheumatic) | 4 | ||||
| Coagulopathy | 6 | ||||
| Obesity | 50 | ||||
| Weight loss | 0 | ||||
| Fluid/electrolyte disorders (FluidsLytes) | 30 | ||||
| Blood Loss | 0 | ||||
| Anaemia | 89 | ||||
| Alcohol | 6 | ||||
| Drugs | 5 | ||||
| Psychoses | 10 | ||||
| Depression | 86 | ||||
*
14 cases readmitted for subsequent TJA not related to index admission arthroplasty.