Table 1.
Participants’ characteristics and LDCT scan findings (n = 746)
| Variables | N = 746 |
|---|---|
| Age (years) | |
| 52–58 | 203 (27.2) |
| 59–64 | 306 (41.0) |
| 65–78 | 237 (31.8) |
| Sex (M) | 462 (61.9) |
| Smokers | 540 (72.4) |
| Ex-smokers | 206 (27.8) |
| Pack year | 49.5 (19.9) |
| Professional exposure | 2 (0.27) |
| Cancer pathology familiarity | 359 (48.1) |
| Comorbidities | |
| Asthma | 12 (1.6) |
| Diabetes mellitus | 57 (7.6) |
| Hypertension | 260 (34.9) |
| Gastroesophageal reflux disease | 34 (4.6) |
| Hypercholesterolemia | 136 (18.2) |
| Hyperthyroidism | 1 (0.1) |
| Benign prostatic hyperplasia (BPH) | 47 (6.3) |
| Lung nodules | |
| Nodules < = 4 mm | 174 (23.3) |
| Nodules 5–6 mm | 135 (18.1) |
| Nodules 7–8 mm | 43 (5.8) |
| Nodules > = 8 mm | 98 (13.1) |
| LDCT findings | |
| Ground glass opacity | 47 (6.3) |
| Centrilobular emphysema | 227 (30.4) |
| Paraseptal emphysema | 82 (11) |
| Atelectasis areas | 68 (9.1) |
| Bronchial wall thickening | 291 (39) |
| Bronchiectasis | 62 (8.3) |
| Diffuse fibrosis | 14 (1.9) |
| Subpleural fibrosis | 277 (37.1) |
| Paravertebral fibrosis | 25 (3.4) |
| Mucus plugs | 17 (2.3) |
| Tracheal deviation | 18 (2.4) |
| Focal pleural thickening | 58 (7.8) |
| Pleural effusion | 0 (0) |
| Vascular Calcifications | 356 (47.7) |
| Coronary Calcifications | 276 (37) |
| Valve Calcifications | 119 (16) |
| Breast nodule | 12 (1.6) |
Categorical variables are expressed as frequency (%), while continuous variables as mean (SD)