Table 2 Mean serum E2 levels by patient characteristics. For categorical variables, E2 levels are reported as mean (SD) by group. For continuous variables, we report the Pearson correlation
Characteristic | Group | n | E2 (SD) | p |
|---|---|---|---|---|
Age at measurement | Years | 83 | − 0.086 | 0.439 |
Disease duration | Years | 83 | − 0.116 | 0.297 |
Baseline skin score | Â | 83 | 0.054 | 0.573 |
POL3 | No | 40 | 35.7 (19.9) | 0.027 |
Yes | 43 | 25.9 (13.2) | Â | |
Scl-70 | No | 69 | 29.3 (16.9) | 0.103 |
Yes | 14 | 37.1 (18.9) | Â | |
Other autoantibody | No | 75 | 31.4 (17.8) | 0.207 |
Yes | 8 | 23.1 (11.9) | Â | |
Organ involvement | ||||
 Lung | No | 38 | 32.0 (20.6) | 0.488 |
Yes | 45 | 29.4 (14.3) | Â | |
 Heart | No | 76 | 29.4 (16.7) | 0.037 |
Yes | 7 | 43.7 (20.4) | Â | |
 Kidney | No | 65 | 31.0 (17.7) | 0.704 |
Yes | 18 | 29.2 (16.8) | Â | |