TABLE 1.
Demographic and clinical characteristics
| No return, n = 6958 | Return with admission, n = 571 | Total, n = 7529 | |
|---|---|---|---|
| Sex | |||
| Female, n (%) | 3586 (51.5) | 278 (48.7) | 3864 (51.3) |
| Age | |||
| Mean (SD) | 46.4 (17.2) | 54.925 (16.4) | 47.074 (17.3) |
| Range | 18–120 | 18–97 | 18–120 |
| Race/ethnicity, n (%) | |||
| Hispanic | 2037 (29.3) | 153 (26.8) | 2190 (29.1) |
| Non‐Hispanic Black | 2351 (33.8) | 231 (40.5) | 2582 (34.3) |
| Non‐Hispanic White | 1252 (18.0) | 132 (23.1) | 1384 (18.4) |
| Unknown/other | 1318 (18.9) | 55 (9.6) | 1373 (18.2) |
| O2 saturation at triage | |||
| Mean (SD) | 97.5 (2.6) | 96.5 (2.9) | 97.5 (2.6) |
| Range | 80–100 | 80–100 | 80–100 |
| Minimum O2 saturation in ED | |||
| Mean (SD) | 96.8 (3.5) | 95.2 (3.9) | 96.7 (3.5) |
| Range | 62–100 | 62–100 | 62.000–100 |
| Temperature | |||
| Mean (SD) | 37.2 (0.7) | 37.5 (0.9) | 37.2 (0.8) |
| Range | 35.7–39.6 | 35.7–39.6 | 35.7–39.6 |
| Diabetes, n (%) | 731 (10.5) | 162 (28.4) | 893 (11.9) |
| Hypertension, n (%) | 1419 (20.4) | 254 (44.5) | 1673 (22.2) |
| Obesity, n (%) | 1161 (16.7) | 194 (34.0) | 1355 (18.0) |
| Hyperlipidemia, n (%) | 528 (7.6) | 136 (23.8) | 664 (8.8) |
| Statins, n (%) | 381 (5.5) | 107 (18.7) | 488 (6.5) |
| Smoking, n (%) | 588 (8.5) | 33 (5.8) | 621 (8.2) |
| Chest X‐ray performed, n (%) | 3753 (53.9) | 454 (79.5) | 4207 (55.9) |
| Systolic blood pressure | |||
| Mean (SD) | 132.7 (19.5) | 133.2 (21.4) | 132.8 (19.6) |
| Range | 83–197 | 83–197 | 83–197 |
| Diastolic blood pressure | |||
| Mean (SD) | 80.3 (12.9) | 79.9 (13.3) | 80.3 (13.0) |
| Range | 46–122 | 46–122 | 46–122 |
Abbreviation: SD, standard deviation.