Table 1. Characteristic of 85 patients.
| Group | IPF (n = 17) | Non-IPF (n = 68) | p Value |
|---|---|---|---|
| Age, median (range) | 71 (57–78) | 65 (20–80) | 0.021 |
| Sex | 0.784 | ||
| Male, n (%) | 11 (65) | 39 (57) | |
| Female, n (%) | 6 (35) | 29 (43) | |
| Charlson Comorbidity Index | 0.828 | ||
| 0, n (%) | 5 (29) | 23 (34) | |
| 1, n (%) | 7 (41) | 29 (43) | |
| 2, n (%) | 3 (18) | 12 (18) | |
| >3, n (%) | 2 (12) | 4 (6) | |
| Smoking | 0.506 | ||
| Never, n (%) | 7 (41) | 37 (54) | |
| Light (B.I. <1000), n (%) | 7 (41) | 19 (28) | |
| Heavy (B.I. ≥1000), n (%) | 3 (18) | 12 (18) | |
| Preoperative serum tests | |||
| KL-6 (U/mL), median (range) | 1242 (330–3030) | 998 (221–7310) | 0.839 |
| SP-A (ng/mL), median (range) | 66.0 (31.6–178.8) | 58.8 (14.9–364) | 0.924 |
| SP-D (ng/mL), median (range) | 354 (30.6–589) | 225 (31.1–1108) | 0.129 |
| Preoperative spirometry tests | |||
| FVC (L), median (range) | 2.57 (1.33–3.96) | 2.68 (1.33–5.47) | 0.510 |
| FVC (% predicted), median (range) | 85.0 (52–120) | 83.0 (48–129) | 0.568 |
| FEV1 (L), median (range) | 2.08 (1.19–3.11) | 2.16 (1.10–4.41) | 0.746 |
| FEV1/FVC ratio (%), median (range) | 82.7 (62.8–93.2) | 78.5 (54.7–95.1) | 0.141 |
| DLCO (mL/min/mmHg), median (range) | 12.8 (7.83–16.6) | 12.7 (5.45–26.6) | 0.470 |
| %DLCO (% predicted), median (range) | 66.0 (44–87) | 67.0 (35–154) | 0.499 |
B.I.: Brinkman Index; DLCO: diffuse capacity of the lung for carbon monoxide; FEV1: forced expiratory volume in one second; FVC: forced vital capacity; IPF: idiopathic pulmonary fibrosis; KL-6: Krebs von den Lungen-6; SP-A: surfactant proteins A; SP-D: surfactant proteins D