| Non-steroid IPF group (n = 19) | Total IPF group (n = 23) | Healthy controls (n = 20) | |
| IL-6 (pg/ml) | 4.53 (2.0) | 4.51 (2.0)* | 1.91 (2.1) |
| TNF-α (pg/ml) | 1.89 (1.32) | 1.81 (1.3) | 2.15 (1.8) |
| TNF-α srI (pg/ml) | 1420.59 (2.1) | 1402.27 (1.9) | 1206.56 (1.3) |
| TNF-α srII (pg/ml) | 3117.38 (1.38) | 2919.17 (1.39)* | 2377.50 (1.29) |
All data are expressed as geometric means (SD).
*p<0.01 compared with controls.