Characteristics of patients admitted in the study cohort and test set
| Overall (N=567) | Test set (N=323) | |
| Age | ||
| Mean (SD) | 59.4 (17.9) | 59.3 (17.8) |
| Median (min, max) | 60.2 (20.1, 97.3) | 61.1 (21.2, 97.3) |
| Age groups | ||
| 18–45 | 139 (24.5%) | 81 (25.1%) |
| 45–65 | 203 (35.8%) | 115 (35.6%) |
| 65–80 | 151 (26.6%) | 87 (26.9%) |
| >80 | 74 (13.1%) | 40 (12.4%) |
| Gender | ||
| Male | 307 (54.1%) | 175 (54.2%) |
| Female | 258 (45.5%) | 147 (45.5%) |
| Missing | 2 (0.4%) | 1 (0.3%) |
| Length of stay | ||
| 0–3 days | 143 (25.2%) | 54 (16.7%) |
| 3–10 days | 332 (58.6%) | 207 (64.1%) |
| >10 days | 92 (16.2%) | 62 (19.2%) |
| Died during hospitalisation | ||
| Yes | 101 (17.8%) | 56 (17.3%) |
| No | 466 (82.2%) | 267 (82.7%) |
| ICU care received | ||
| Yes | 97 (17.1%) | 55 (17.0%) |
| No | 470 (82.9%) | 268 (83.0%) |
| Geographic origin | ||
| Manhattan | 272 (48.0%) | 150 (46.4%) |
| Queens | 85 (15.0%) | 52 (16.1%) |
| Brooklyn | 89 (15.7%) | 54 (16.7%) |
| Bronx | 59 (10.4%) | 30 (9.3%) |
| Staten Island | 3 (0.5%) | 1 (0.3%) |
| Out of New York City | 46 (8.1%) | 29 (9.0%) |
| Out of New York State | 10 (1.8%) | 6 (1.9%) |
| Missing | 3 (0.5%) | 1 (0.3%) |
| Race and ethnicity | ||
| Non-hispanic black | 115 (20.3%) | 74 (22.9%) |
| Non-hispanic white | 127 (22.4%) | 69 (21.4%) |
| Hispanic black | 18 (3.2%) | 7 (2.2%) |
| Hispanic white | 19 (3.4%) | 11 (3.4%) |
| Asian | 23 (4.1%) | 14 (4.3%) |
| Others | 223 (39.3%) | 128 (39.6%) |
| American Indian | 1 (0.2%) | 0 (0%) |
| Pacific Islander | 1 (0.2%) | 0 (0%) |
| Unspecified | 40 (7.1%) | 20 (6.2%) |
| Smoking history | ||
| Current smoker | 21 (3.7%) | 12 (3.7%) |
| Past smoker | 133 (23.5%) | 76 (23.5%) |
| Never smoked | 315 (55.6%) | 182 (56.3%) |
| Unknown | 96 (16.9%) | 52 (16.1%) |
| Missing | 2 (0.4%) | 1 (0.3%) |
| Hypertension | ||
| Yes | 178 (31.4%) | 103 (31.9%) |
| No | 387 (68.3%) | 219 (67.8%) |
| Missing | 2 (0.4%) | 1 (0.3%) |
| Diabetes | ||
| Yes | 124 (21.9%) | 74 (22.9%) |
| No | 441 (77.8%) | 248 (76.8%) |
| Missing | 2 (0.4%) | 1 (0.3%) |
| COPD | ||
| Yes | 20 (3.5%) | 13 (4.0%) |
| No | 545 (96.1%) | 309 (95.7%) |
| Missing | 2 (0.4%) | 1 (0.3%) |
| Obesity | ||
| Yes | 65 (11.5%) | 37 (11.5%) |
| No | 500 (88.2%) | 285 (88.2%) |
| Missing | 2 (0.4%) | 1 (0.3%) |
| Chronic kidney disease | ||
| Yes | 58 (10.2%) | 32 (9.9%) |
| No | 507 (89.4%) | 290 (89.8%) |
| Missing | 2 (0.4%) | 1 (0.3%) |
COPD, chronic obstructive pulmonary disease; ICU, intensive care unit.