Patient characteristics
| RA hay fever patients (n=12) | RA control patients (n=24) | |
|---|---|---|
| Female/male | 10/2 | 20/4 |
| Median age in years (range) | 40 (25–78) | 42.5 (26–77) |
| Median disease duration in years (range) | 4.5 (1–23) | 6.0 (1–20) |
| RF positive | 8 (67%) | 16 (67%) |
| Extra articular manifestations | 0 | 3 (13%) |
| Noduli | 2 (17%) | 7 (29%) |
| Other diseases | 2 | 6 |
| ARA functional class (1/2/3/4) | 6/5/0/1 | 10/12/2/0 |
| Median total IgE in U/ml (range) | 109 (9–518) | 16 (2–300)* |
| Median total eosinophilic count in mill/ml (range) | 0.14 (0.06–0.81) | 0.1 (0–0.37)* |
Disease characteristics of 12 RA patients with confirmed hay fever of our rheumatology outpatient clinic and 24 RA patients without hay fever matched for sex, age, and disease duration. *Indicate a statistical significant difference between the two groups.