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Frequency of patient’s symptoms in analyzed sample (n = 1737)
| Symptoms | n (%) |
|---|---|
| Cough | |
| Yes | 1475 (84.9) |
| No | 262 (15.1) |
| CB | |
| Yes | 1167 (67.2) |
| No | 570 (32.8) |
| Dyspnea | |
| Yes | 826 (47.6) |
| Stage 1 | 536 (30.9) |
| Stage 2 | 212 (12.2) |
| Stage 3 | 55 (3.2) |
| Stage 4 | 16 (0.9) |
| No | 911 (67.9) |
