Baseline characteristics of the study cohort.
| Characteristics | IBD (N=218) | Controls (N=211) | P-value |
|---|---|---|---|
| Mean age in years+-SD | 30.90±1200 | 29.70±11.58 | 0.29 |
| Female gender (%) | 112 | 165 | <0.001 |
| Smoking status: | 0.001 | ||
| Never | 161 | 170 | 0.07 |
| Current cigarette | 27 | 19 | 0.15 |
| X cigarette | 3 | 20 | 0.001 |
| Current water pipe | 17 | 10 | 0.15 |
| X water pipe | 2 | 0 | 0.15 |
| Family history of IBD | 17 | 19 | 0.68 |
| Comorbidities: | |||
| No chronic illness | 178 | 172 | 0.36 |
| DM | 6 | 6 | 0.99 |
| Hypertension | 7 | 7 | 0.97 |
| Rheumatoid arthritis | 4 | 4 | 0.97 |
| Vitamin B12 deficiency | 7 | 12 | 0.22 |
| Varicose veins | 7 | 1 | 0.04 |
| COPD | 5 | 1 | 0.11 |
| Hypothyroidism | 4 | 7 | 0.34 |
| Durations of RLS in years | 1.36+-0.69 | 1.45+-0.79 | 0.20 |