Table 1.
Sociodemographic characteristics of training and test sets
| Train (N=1877) | Test (N=634) | Total (N=2511) | p value | |
|---|---|---|---|---|
| Hospital type | 0.150 | |||
| Academic Medical Centers | 992 (52.9%) | 356 (56.2%) | 1348 (53.7%) | |
| Community Hospitals | 885 (47.1%) | 278 (43.8%) | 1163 (46.3%) | |
| Age at admission, mean (SD) | 62.1 (19.3) | 64.4 (18.0) | 62.6 (19.0) | 0.007 |
| Age group | < 0.001 | |||
| < 30 | 99 (5.3%) | 22 (3.5%) | 121 (4.8%) | |
| 30–39 | 189 (10.1%) | 50 (7.9%) | 239 (9.5%) | |
| 40–49 | 226 (12.0%) | 49 (7.7%) | 275 (11.0%) | |
| 50–59 | 309 (16.5%) | 111 (17.5%) | 420 (16.7%) | |
| 60–69 | 316 (16.8%) | 153 (24.1%) | 469 (18.7%) | |
| 70–79 | 324 (17.3%) | 102 (16.1%) | 426 (17.0%) | |
| 80+ | 414 (22.1%) | 147 (23.2%) | 561 (22.3%) | |
| Male gender | 983 (52.4%) | 294 (46.4%) | 1277 (50.9%) | 0.009 |
| Race | < 0.001 | |||
| Asian | 70 (3.7%) | 25 (3.9%) | 95 (3.8%) | |
| Black | 209 (11.1%) | 219 (34.5%) | 428 (17.0%) | |
| Other | 318 (16.9%) | 71 (11.2%) | 389 (15.5%) | |
| Unknown | 175 (9.3%) | 70 (11.0%) | 245 (9.8%) | |
| White | 1105 (58.9%) | 249 (39.3%) | 1354 (53.9%) | |
| Hispanic ethnicity | 563 (30.0%) | 116 (18.3%) | 679 (27.0%) | <0.001 |
| Charlson comorbidity index | 2.559 (3.254) | 2.836 (3.607) | 2.629 (3.348) | 0.072 |
| Mean (SD) | ||||
| ICU admission | 161 (8.6%) | 54 (8.5%) | 215 (8.6%) | 0.963 |
| Mechanical ventilation | 129 (6.9%) | 35 (5.5%) | 164 (6.5%) | 0.234 |
| Death | 209 (11.1%) | 83 (13.1%) | 292 (11.6%) | 0.184 |
| COVID severe outcome | ||||
| (ICU, mechanical ventilation or death) | 338 (18.0%) | 116 (18.3%) | 454 (18.1%) | 0.870 |
| Discharged to SNF/Rehab | 253 (40.6%) | 771 (42.1%) | 1024 (41.7%) | 0.506 |