Table 2.
Comparison of RLS prevalence across study groups
| Population/RLS | No migraine controls (N = 133) |
Episodic migraine groups | p value† | p value§ | ||
|---|---|---|---|---|---|---|
| 1–8 days (N = 224) |
9–14 days (N = 91) |
≥15 days (N = 57) |
||||
| Whole cohort (N = 505) | 0.026 | 0.256 | ||||
| Non-RLS | 128 (96.2) | 213 (95.1) | 85 (93.4) | 50 (87.7) | ||
| RLS | 5 (3.8) | 11 (4.9) | 6 (6.6) | 7 (12.3) | ||
| With aura (N = 244) | 0.002 | 0.043 | ||||
| Non-RLS | 128 (96.2) | 66 (93.0) | 20 (87.0) | 13 (76.5) | ||
| RLS | 5 (3.8) | 5 (7.0) | 3 (13.0) | 4 (23.5) | ||
| Without aura (N = 394) | 0.385 | 0.750 | ||||
| Non-RLS | 128 (96.2) | 147 (96.1) | 65 (95.6) | 37 (92.5) | ||
| RLS | 5 (3.8) | 6 (3.9) | 3 (4.4) | 3 (7.5) | ||
†Linear trend analysis by Cochran–Armitage chi-square test (unadjusted analysis);
§Linear contrast in the multivariable logistic regression with adjustment of gender, age, body mass index, education level, smoking status, alcohol consumption, coffee consumption, HADS anxiety, HADS depression, and PSQI score