Table 1 Characteristics of the study population.
Characteristics | No. of patients |
|---|---|
Age (years old) | |
Mean | 65.6 ± 18.8 |
Median (range) | 68.4 (18.5–100.1) |
Gender | |
Female | 241/513 (47%) |
Male | 272/513 (53%) |
Active smoking | |
No | 359/412 (87.1%) |
Yes | 53/412 (12.9%) |
Anti-inflammatory drugs intake | |
No | 395/418 (94.5%) |
Yes | 23/418 (5.5%) |
Significant medical history | |
No | 151/478 (31.6%) |
Cardiovascular risk factors and diseases | 267/478 (55.9%) |
Respiratory diseases | 91/478 (19%) |
Cancer | 39/478 (8.2%) |
Renal diseases | 21/478 (4.4%) |
Neurological diseases | 44/478 (9.2%) |
Liver diseases | 4/478 (0.8%) |
Immunodepression | 19/478 (4%) |
Pre-existing lung chronic disease on chest CT | |
No | 414/513 (80.7%) |
Yes | 99/513 (19.3%) |
RT-PCR status | |
Negative | 269/513 (52.4%) |
Positive | 244/513 (47.6%) |
