Table 3.
Factors associating with RLS prevalence
| Variable | Univariate analysis | Multivariable analysis | ||
|---|---|---|---|---|
| OR (95 % CI) | p value | OR (95 % CI) | p value | |
| Migraine frequency | ||||
| Control (reference) | - | - | ||
| 1–8 days | 1.32 (0.45–3.89) | 0.612 | 1.03 (0.29–3.71) | 0.963 |
| 9–14 days | 1.81 (0.54–6.11) | 0.341 | 1.21 (0.30–4.88) | 0.791 |
| ≥ 15 days | 3.58 (1.09–11.82) | 0.036 | 2.34 (0.56–9.83) | 0.246 |
| Female gender | 0.94 (0.43–2.05) | 0.874 | 0.87 (0.35–2.18) | 0.763 |
| Age (years) | 1.01 (0.98–1.04) | 0.547 | 1.02 (0.98–1.06) | 0.374 |
| Body mass index (kg/m2) | 1.02 (0.93–1.13) | 0.663 | 1.00 (0.90–1.11) | 0.946 |
| Education level (years) | 0.96 (0.84–1.10) | 0.568 | 1.02 (0.88–1.19) | 0.762 |
| Current or former smoker | 1.23 (0.49–3.10) | 0.663 | 0.98 (0.33–2.96) | 0.973 |
| Current or former alcohol | 1.86 (0.89–3.92) | 0.100 | 1.55 (0.63–3.84) | 0.340 |
| Coffee consumption | ||||
| Never (reference) | - | - | ||
| < once a month | 0.71 (0.24–2.04) | 0.518 | 0.59 (0.17–2.03) | 0.402 |
| ≥ 1 day a week | 0.96 (0.41–2.25) | 0.923 | 0.97 (0.36–2.61) | 0.947 |
| HADS-anxiety | 1.20 (1.09–1.31) | <0.001 | 1.18 (1.03–1.36) | 0.019 |
| HADS-depression | 1.08 (0.99–1.18) | 0.083 | 0.89 (0.78–1.02) | 0.094 |
| PSQI total score | 1.26 (1.13–1.39) | <0.001 | 1.17 (1.02–1.33) | 0.023 |