Table. Demographic and Clinical Characteristics of Patients Admitted to the Hospital With COVID-19 for 4 Periods in 2020.
| Characteristic | Patients, No. (%) | ||||
|---|---|---|---|---|---|
| March and April (n = 11 901) | May and June (n = 4116) | July and August (n = 2709) | September-November (n = 2010) | Total (N = 20 736) | |
| Men | 6709 (56.4) | 2080 (50.5) | 1386 (51.2) | 1037 (51.6) | 11 212 (54.1) |
| Women | 5192 (43.6) | 2036 (49.5) | 1323 (48.8) | 973 (48.4) | 9524 (45.9) |
| Age, mean (SD), y | 62.1 (17.3) | 59.6 (18.9) | 59.2 (18.4) | 61.4 (18.1) | 61.2 (17.9) |
| Survival status | |||||
| In-hospital death | 2268 (19.1) | 488 (11.9) | 298 (11.0) | 217 (10.8) | 3271 (15.8) |
| Medical history | |||||
| CABG or PCI | 749 (6.3) | 247 (6.0) | 173 (6.4) | 193 (9.6) | 1362 (6.6) |
| Cancer | 1603 (13.5) | 408 (9.9) | 284 (10.5) | 265 (13.2) | 2560 (12.3) |
| Cerebrovascular disease | 1522 (12.8) | 486 (11.8) | 255 (9.4) | 198 (9.9) | 2461 (11.9) |
| Chronic kidney disease | 1485 (12.5) | 556 (13.5) | 315 (11.6) | 272 (13.5) | 2628 (12.7) |
| Diabetes | 4043 (34.0) | 1523 (37.0) | 997 (36.8) | 698 (34.7) | 7261 (35.0) |
| Heart failure | 1226 (10.3) | 514 (12.5) | 331 (12.2) | 272 (13.5) | 2343 (11.3) |
| Hypertension | 6865 (57.7) | 2382 (57.9) | 1654 (61.1) | 1215 (60.4) | 12 116 (58.4) |
| Pulmonary disease | 2144 (18.0) | 705 (17.1) | 446 (16.5) | 507 (25.2) | 3802 (18.3) |
| Smoking | 713 (6.0) | 283 (6.9) | 180 (6.6) | 156 (7.8) | 1332 (6.4) |
| Admission characteristic | |||||
| BMI, mean (SD) | 30.4 (8.1) | 30.9 (8.6) | 31.8 (9.2) | 31.6 (9.0) | 30.8 (8.5) |
| O2 saturation, mean (SD), % | 93.4 (6.9) | 94.3 (6.5) | 93.9 (7.0) | 94 (6.2) | 93.7 (6.8) |
| Supplemental O2 | 2733 (23.0) | 1256 (30.5) | 885 (32.7) | 722 (35.9) | 5596 (27.0) |
| Interstitial infiltrates | 8416 (70.7) | 2528 (61.4) | 1549 (57.2) | 1223 (60.8) | 13 716 (66.1) |
| Respiratory rate, mean (SD) breaths/min | 21.5 (6.7) | 21.8 (6.7) | 21.3 (6.5) | 21.3 (6.5) | 21.5 (6.6) |
| Heart rate, mean (SD) beats/min | 95 (19.6) | 93.5 (19.9) | 91.8 (19.7) | 91 (19.9) | 93.9 (19.8) |
| Systolic BP, mean, (SD), mm Hg | 130.9 (24.0) | 131.1 (24.0) | 131.2 (23.9) | 131.6 (23.4) | 131 (23.9) |
| Creatinine, mean (SD), mg/dL | 1.7 (5.4) | 1.8 (6.7) | 1.7 (4.5) | 1.5 (3.6) | 1.7 (5.4) |
| Hospitalization characteristic | |||||
| Length of stay, mean (SD), d | 10.7 (12.1) | 9.6 (10.5) | 9.3 (9.9) | 7.5 (6.8) | 10 (11.1) |
| ICU admission | 3641 (30.6) | 1143 (27.8) | 915 (33.8) | 686 (34.1) | 6385 (30.8) |
| Length of stay in ICU, mean (SD), d | 13.9 (14.1) | 10.7 (11.7) | 9.6 (11.1) | 6.6 (7.0) | 11.9 (12.9) |
| Placed on mechanical ventilation | 2768 (23.3) | 593 (14.4) | 426 (15.7) | 279 (13.9) | 4066 (19.6) |
| Days on ventilator, mean (SD) | 12.3 (12.9) | 11.5 (12.2) | 11.8 (13.1) | 7.1 (7.1) | 11.8 (12.5) |
| Treated with | |||||
| Glucocorticoids | 2632 (22.1) | 1417 (34.4) | 1694 (62.5) | 1374 (68.4) | 7117 (34.3) |
| Remdesivir | 448 (3.8) | 873 (21.2) | 886 (32.7) | 931 (46.3) | 3138 (15.1) |
| Azithromycin | 6169 (51.8) | 1341 (32.6) | 790 (29.2) | 439 (21.8) | 8739 (42.1) |
| Immunoglobulins | 78 (0.7) | 29 (0.7) | 29 (1.1) | 6 (0.3) | 142 (0.7) |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); BP, blood pressure; CABG, coronary artery bypass grafting; ICU, intensive care unit; O2, oxygen; PCI, percutaneous coronary intervention.
SI conversion factor: To convert creatinine to micromoles per liter, multiply by 88.4.