Table 2. Clinical characteristics of the audited cases (n = 621).
| Average* | Inter-hospital range | P-Value† | |
|---|---|---|---|
| Age (years) | 68.3 (9.8) | 64.7–69.7 | NS |
| Male gender (n) | 527 (84.9) | 51.7–94.8 | < 0.001 |
| Current smokers (n) | 142 (22.9) | 13.8–37.5 | < 0.001 |
| Tobacco history (pack-year) | 54.7 (30.5) | 42.5–66.6 | < 0.001 |
| Comorbidities (Charlson) | 2.15 (1.5) | 1.8–2.4 | NS |
| Psychiatric comorbidities (n) | 126 (20.3) | 12.3–24.1 | NS |
| Cardiovascular comorbidities (n) | 163 (26.2) | 18.2–37.5 | NS |
| Previous neoplasms (n) | 92 (14.8) | 8.6–21.0 | NS |
| Time from diagnosis (years) | 5.5 (5.9) | 1.06–6.9 | 0.033 |
| Previous hospitalizations (n) | 0.9 (1.6) | 0.1–1.3 | < 0.001 |
| Body mass index (kg/m2) | 28.2 (5.3) | 26.0–29.6 | 0.009 |
| FVC (%) | 74.6 (20.7) | 63.7–98.4 | < 0.001 |
| FEV1 (%) | 51.9 (19.7) | 42.7–59.1 | 0.001 |
* Average value expressed as the mean (standard deviation) or absolute (relative) frequency depending on the nature of the variable.
† Calculated for the variability between centers using ANOVA or Chi-square, depending on the nature of the variable.