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. 2021 Jun 21;11:12931. doi: 10.1038/s41598-021-92400-y

Table 1.

Demographics, comorbidities, and clinical data of 321 patients with COVID-19 stratified according to disease severity.

Total cohort (n = 321) Mild disease (n = 56) Moderate disease (n = 180) Severe disease (n = 85) p valuec
Age in years, median (IQR) 63 (52–77) 48 (40–60) 62 (52–75) 75 (63–84) < 0.001
Age ≥ 70 (%) 118 (36.8) 8 (14.3) 58 (32.2) 52 (61.2) < 0.001
Male sex (%) 169 (52.6) 29 (51.8) 90 (50.0) 50 (58.8) 0.40
Chronic underlying diseases (%)
 Arterial hypertension 150 (46.7) 16 (28.6) 80 (44.4) 54 (63.5) < 0.001
 Diabetes mellitus 57 (17.8) 6 (10.7) 35 (19.4) 16 (18.8) 0.31
 Chronic lung diseasea 38 (11.8) 3 (5.4) 26 (14.4) 9 (10.6) 0.17
 Cardiovascular disease 64 (19.9) 5 (8.9) 32 (17.8) 27 (31.8) 0.002
 Chronic kidney disease 22 (6.9) 2 (3.6) 13 (7.2) 7 (8.2) 0.54
 Chronic liver disease 10 (3.1) 1 (1.8) 6 (3.3) 3 (3.5) 0.82
 Cancerb 25 (7.8) 5 (8.9) 9 (5.0) 11 (12.9) 0.08
Symptoms (%)
 Fever 237 (73.8) 38 (67.9) 142 (78.9) 57 (67.1) 0.07
 Rhinorrhea 19 (5.9) 6 (10.7) 10 (5.6) 3 (3.5) 0.20
 Odynophagia 22 (6.9) 6 (10.7) 11 (6.1) 5 (5.9) 0.45
 Myalgias 70 (21.8) 13 (23.2) 37 (20.6) 20 (23.5) 0.83
 Headache 57 (17.8) 11 (19.6) 30 (16.7) 16 (18.8) 0.84
 Cough 216 (67.3) 40 (71.4) 128 (71.1) 48 (56.5) 0.04
 Expectoration 33 (10.3) 7 (12.5) 16 (8.9) 10 (11.8) 0.64
 Pleuritic chest pain 14 (4.4) 3 (5.4) 9 (5.0) 2 (2.4) 0.57
 Dyspnea 147 (45.8) 19 (33.9) 75 (41.7) 53 (62.4) 0.001
 Diarrhea 52 (16.2) 12 (21.4) 33 (18.3) 7 (8.2) 0.06
 Vomiting 20 (6.2) 1 (1.8) 16 (8.9) 3 (3.5) 0.08
Impaired consciousness 12 (3.7) 1 (1.8) 6 (3.3) 5 (5.9) 0.42
 Days from symptom onset to diagnosis, median (IQR) 7 (3–10) 7 (5–12) 6 (3–10) 6 (2–10) 0.35
 Infiltrate on chest X-ray (%) 224 (69.8) 9 (16.1) 140 (77.8) 75 (88.2) < 0.001
Signs (categorized, %)
 Temperature > 37.5 °C 82 (26.9) 5 (11.1) 48 (27.0) 29 (35.4) 0.01
 SBP < 90 mmHg 7 (2.5) 1 (2.4) 4 (2.4) 2 (2.8) 0.99
 DBP < 60 mmHg 24 (8.6) 1 (2.4) 9 (5.5) 14 (19.4) 0.001
 Hart rate > 100 bpm 70 (21.8) 5 (8.9) 41 (22.8) 24 (28.2) 0.02
 Respiratory rate > 20 bpm 17 (20.0) 0 (0) 5 (10.6) 12 (35.3) 0.01
 SpO2 < 95% 127 (39.6) 4 (7.1) 52 (28.9) 71 (83.5) < 0.001

aChronic obstructive pulmonary disease, obstructive sleep apnea, or asthma.

bActive solid or hematologic malignant neoplasms.

cAcross all three groups.