Table 2 Comparison between patients with rheumatoid arthritis with normal and those with abnormal spirometry and IOS parameters; all patients had respiratory symptoms. (n = 72)
| Â | IOS | p-value | |
|---|---|---|---|
Spirometry | Normal | Abnormal | 0.002 |
Normal | 11 | 26 | 37 (51.4) |
Abnormal | 1 | 34 | 35 (48.6) |
| Â | 12 (16.7) | 60 (83.3) | 72 |