RLS N (%) OR (95 % CI)  P-value
Migraine <1 attack per month, N = 47 1 (2.1) Reference Reference
1–10 attacks per month, N = 80 10 (12.5) 2.0 (1.3–3.2) 0.003
>10 attacks per month, N = 16 2 (12.5) 2.5 (1.0–5.6) 0.038