Table 3.
Radiological, and analytical findings on admission in patients ≥ 80 years hospitalized with COVID-19 during the first and successive waves
|
Total
N (%) ( n = 5953) |
First wave
N (%) ( n = 4545) |
Successive waves
N (%) ( n = 1408) |
p value | |
|---|---|---|---|---|
| Chest X-ray findings | < 0.001 | |||
| Normal | 1091 (18.7) | 768 (17.3) | 323 (23.1) | |
| Unilateral infiltrates | 1168 (20.0) | 867 (19.5) | 301 (21.5) | |
| Bilateral infiltrates | 3584 (61.3) | 2807 (63.2) | 777 (55.5) | |
| Laboratory findings | ||||
| Arterial blood gases | ||||
| PO2/FiO2 ratio | 277 (222–327) | 273 (214–323) | 289 (242–333) | < 0.001 |
| Blood count & biochemistry | ||||
| Lymphocytes (× 103/μL) | 0.88 (0.06–1.23) | 0.88 (0.60–1.23) | 0.87 (0.6–1.23) | 0.532 |
| Lactate dehydrogenase (U/L) | 322 (246–448) | 330 (251–463) | 302 (233–412) | < 0.001 |
| C-reactive protein (mg/L) | 71.0 (24.0–138) | 71.6 (23.5–143) | 69.8 (27.8–128) | 0.330 |
| D-dimer (ng/mL) | 1.01 (0.55–2.02) | 1.02 (0.54–2.02) | 1.00 (0.55–2.01) | 0.558 |
| Serum ferritin (μg/L) | 445 (212–953) | 484 (230–1013) | 396 (189–856) | < 0.001 |
| Fibrinogen (mg/L) | 598 (500–700) | 607 (500–706) | 564 (461–700) | < 0.001 |
Statistically significant differences are indicated in bold