Table 3.
Datasets (train and test sets) used in predicting hospitalization in patients with respiratory symptoms during the COVID-19 pandemic.
| Characteristic | Train n = 5868 |
Test n = 1468 |
|---|---|---|
| Female sex | 3102 (53%) | 792 (54%) |
| Age | 41 (29, 53) | 40 (30, 54) |
| Symptom duration | 4 (2, 8) | 4 (2, 8) |
| Systolic blood pressure | 133 (121, 147) | 132 (120, 145) |
| Diastolic blood pressure | 84 (74, 94) | 82 (74, 92) |
| Heart rate | 90 (80, 102) | 89 (80, 100) |
| Temperature | 36.50 (36.00, 36.80) | 36.50 (36.00, 36.70) |
| Respiratory frequency | 18 (17, 20) | 18 (17, 20) |
| SpO2 | 97.00 (96.00, 98.00) | 97.00 (96.00, 98.00) |
| Influenza vaccine | 1632 (40%) | 414 (39%) |
| Fever | 2258 (44%) | 531 (41%) |
| Fatigue | 1456 (28%) | 356 (27%) |
| Occasional Cough | 420 (8.1%) | 96 (7.4%) |
| Dry cough | 2370 (46%) | 594 (46%) |
| Phlegm cough | 641 (12%) | 154 (12%) |
| Running nose | 1059 (20%) | 290 (22%) |
| Sore throat | 1173 (23%) | 293 (23%) |
| Diarrhea | 733 (14%) | 206 (16%) |
| Dyspnea | 1822 (35%) | 435 (34%) |
| Anorexia | 580 (11%) | 128 (9.9%) |
| Headache | 1851 (36%) | 461 (36%) |
| Myalgia | 1597 (31%) | 386 (30%) |
| Nausea and vomiting | 652 (13%) | 174 (13%) |
| Chest wheezing | 120 (2.3%) | 27 (2.1%) |
| Chest pain | 889 (17%) | 237 (18%) |
| Abdominal pain | 295 (5.7%) | 59 (4.6%) |
| Anosmia | 959 (19%) | 254 (20%) |
| Dysgeusia | 960 (19%) | 247 (19%) |
| Chills | 570 (11%) | 148 (11%) |
| Hypertension | 1193 (23%) | 266 (20%) |
| Heart disease | 238 (4.6%) | 57 (4.4%) |
| Diabetes mellitus | 466 (9.0%) | 139 (11%) |
| Cerebrovascular disease | 47 (0.9%) | 12 (0.9%) |
| Chronic kidney disease | 188 (3.6%) | 40 (3.1%) |
| Immunosuppression | 231 (4.5%) | 54 (4.2%) |
| COPD | 84 (1.6%) | 24 (1.8%) |
| Asthma | 307 (5.9%) | 67 (5.2%) |
| Tuberculosis | 29 (0.6%) | 16 (1.2%) |
| Respiratory disease | 79 (1.5%) | 20 (1.5%) |
| Neoplasia | 97 (1.9%) | 22 (1.7%) |
| Transplant | 171 (3.3%) | 37 (2.8%) |
| Obesity | 284 (5.5%) | 77 (5.9%) |
| Smoking | 535 (10%) | 131 (10%) |
| Pregnant | 61 (1.2%) | 21 (1.6%) |
| Prior hospitalization | 47 (0.9%) | 13 (1.0%) |
| Hospitalization | 592 (10%) | 148 (10%) |
Continuous values are present in medians and percentiles (25 and 75%). SpO2: oxyhemoglobin saturation by pulse oximetry; COPD: chronic obstructive pulmonary disease.