Table 1.
Patient clinical characteristics
| All patients (n = 1171) | Patients with positive baseline CXR (n = 940) | Patients with negative baseline CXR (n = 231) | p value | |
|---|---|---|---|---|
| Characteristics | ||||
| Mean age (years) | 63.3 (SD 15.9) | 65 (SD 14.7) | 56.6 (SD 18.4) | 0.001 |
| Sex | ||||
| Male | 767 (65.5%) | 634 (67.5%) | 133 (57.6%) | 0.005 |
| Female | 404 (34.5%) | 306 (32.55%) | 98 (42.4%) | 0.005 |
| Symptoms | ||||
| Fever | 935 (79.9%) | 739 (78.6%) | 196 (84.9%) | < 0.001 |
| Cough | 594 (50.7%) | 476 (50.6%) | 118 (51.1%) | < 0.001 |
| Dyspnea | 411 (35.1%) | 361 (38.4%) | 50 (21.7%) | < 0.001 |
| Sore throat | 25 (2.1%) | 10 (1%) | 15 (6.5%) | – |
| Diarrhea | 44 (3.8%) | 38 (4%) | 6 (2.6%) | – |
| Vomiting | 24 (2%) | 21 (2.2%) | 3 (1.3%) | – |
| Headache | 18 (1.5%) | 12 (1.3%) | 6 (2.6%) | – |
| Syncope | 32 (2.7%) | 25 (2.7%) | 7 (3%) | – |
| Asymptomatic | 54 (4.6%) | 38 (4%) | 16 (6.9%) | < 0.001 |
| Comorbidities | ||||
| Any | 692 (59.1%) | 576 (61.3%) | 116 (50.2%) | – |
| Hypertension | 365 (31.2%) | 313 (33.3%) | 52 (22.5%) | – |
| Diabetes | 158 (13.5%) | 126 (13.4%) | 32 (13.9%) | – |
| Cardiovascular disease | 157 (13.4%) | 129 (13.7%) | 28 (12.1%) | – |
| Pulmonary disease | 106 (8.8%) | 78 (8.3%) | 28 (12.1%) | 0.001 |
| Malignancy | 60 (5.1%) | 58 (6.2%) | 2 (0.9%) | – |