Table 3 Comparison between patients with rheumatoid arthritis with normal and those with abnormal spirometry and IOS parameters; all patients had abnormal findings on chest HRCT (n = 35)
| Â | IOS | p-value | |
|---|---|---|---|
Spirometry | Normal | Abnormal | 0.470 |
Normal | 0 | 12 | 12 (34.3) |
Abnormal | 1 | 22 | 23 (65.7) |
| Â | 1 (2.9) | 34 (97.1) | 35 |