Table 2.
Statistics and features of the datasets tested in our experiments. The class distribution (ie, the percentage of the positive/negative classes) is also included. The numerical covariates are labeled with an asterisk symbol (“*”), while the categorical ones are converted into binary through dummy coding. The values for the myocardial infarction and cancer biomarker datasets are adapted from11
| Dataset | MyocardialInfarction(Edin) | CancerBiomarker(CA) | Length of Hospitalization(THA) | |
|---|---|---|---|---|
| # of Covariates | 9 | 2 | 34 | |
| # of Samples | 1,253 | 141 | 960 | |
| Class Distribution | 0.219 / 0.781 | 0.638 / 0.362 | 0.278 / 0.722 | |
| Outcome | Presence of Disease | Presence of Cancer | Hospital Length of Stay is greater than 3 days | |
| Covariates | Pain in Right Arm | CA-19* | Male Sex | SA - Posterior |
| Nausea | CA-125* | Age ≥ 65 years old | SA - Anterolateral | |
| Hypo Perfusion | – | Preoperative METs < 4 | SA - Anterior | |
| ST Elevation | – | General Anesthesia (versus Neuraxial Anesthesia) | CM - Chronic Kidney Disease | |
| New Q Waves | – | Non-English Speaker | CM - Chronic Obstructive Pulmonary Disease | |
| ST Depression | – | OG - Mild | CM - Congestive Heart Failure | |
| T Wave Inversion | – | OG - Moderate | CM - Coronary Artery Disease | |
| Sweating | – | OG - Severe | CM - Hypertension | |
| Pain in Left Arm | – | OG - Avascular Necrosis | CM - Diabetes Mellitus | |
| – | – | CHD - No osteoarthritis | CM - Obstructive Sleep Apnea | |
| – | – | CHD - Mild osteoarthritis | CM - Dialysis | |
| – | – | CHD - Moderate osteoarthritis | CM - Psychiatric history (depression, anxiety, or bipolar disease) | |
| – | – | CHD - Severe osteoarthritis | CM - Active Smoker | |
| – | – | CHD - Previous Surgery (ie, hip replacement) | CM - Asthma | |
| – | – | CHD - Avascular Necrosis | CM - Thrombocytopenia (platelets < 150 000/uL) | |
| – | – | Obesity (BMI > 30kg/m2) | CM - Anemia | |
| – | – | Preoperative Opioid Use | CM - Dementia | |
Abbreviations: BMI, body mass index; CHD, Contralateral Hip Description; CM, comorbidities; METS, metabolic equivalents; OG, osteoarthritis grade (operative side); SA, surgical approach; THA, total hip arthroplasty.