Table 1.
Demographic and baseline characteristics of COVID-19 patients among 3 groups
| Younger (n = 102) | Middle-aged (n = 157) | Older (n = 307) | |
|---|---|---|---|
| Age (years) | 37.0 (32.0–41.3) | 54.0 (49.5–57.0) | 69.0 (65.0–76.0) |
| Sex | |||
| Male | 54 (52.9%) | 60 (38.2%) | 153 (49.8%) |
| Female | 48 (47.1%) | 97 (61.8%) | 154 (50.2%) |
| Typical symptoms | |||
| Fever | 71 (69.6%) | 126 (80.3%) | 248 (80.8%) |
| Dry cough | 63 (61.8%) | 108 (68.8%) | 183 (59.6%) |
| Fatigue | 38 (37.3%) | 76 (48.4%) | 144 (46.9%) |
| Dyspnea | 12 (11.8%) | 26 (16.6%) | 41 (13.4%) |
| Neurological symptoms | |||
| Dizziness | 3/102 (2.9%) | 9/156 (5.8%) | 16/302 (5.3%) |
| Headache | 5/102 (4.9%) | 13/156 (8.3%) | 10/302 (3.3%) |
| Impaired consciousness | 0 (0.0%) | 0 (0.0%) | 3 (1.0%) |
| Comorbidity | |||
| Any | 18 (17.6%) | 66 (42.0%)* | 222 (72.3%)*# |
| Hypertension | 6 (5.9%) | 52 (33.1%)* | 158 (51.5%)*# |
| Diabetes | 3 (2.9%) | 19 (12.1%)* | 52 (16.9%)* |
| CAD | 0 (0.0%) | 8 (5.1%) | 50 (16.3%)*# |
| Cerebral infarction | 0 (0.0%) | 1 (0.6%) | 21 (6.8%)* |
| Cancer | 1 (1.0%) | 2 (1.3%) | 9 (2.9%) |
| CKD | 2 (2.0%) | 1 (0.6%) | 7 (2.3%) |
| COPD | 0 (0.0%) | 1 (0.6%) | 7 (2.3%) |
| SBP (mmHg) | 122.0 (116.0–130.0) | 129.0 (120.0–140.0)* | 134.0 (121.0–148.0)*# |
| DBP (mmHg) | 78.0 (70.0–85.0) | 80.0 (70.0–87.5) | 80.0 (70.0–87.0) |
| Heart rate (bpm) | 85.0 (76.0–98.0) | 86.0 (77.5–96.0) | 85.0 (77.0–98.0) |
Data were presented as n (%) or median (IQR). *P < 0.05 vs younger group; #P < 0.05 vs middle-aged group. CAD coronary artery disease, CKD chronic kidney disease, COPD chronic obstructive pulmonary disease, SBP systolic blood pressure, DBP diastolic blood pressure