Age group, No of participants/ No. of RLS Non-headache control, N = 1,422 Non-migraine headache, N = 1,130 Migraine, N = 143
No. of RLS (%) OR No. of RLS (%) OR (95 % CI) P-value No. of RLS (%) OR (95 % CI) P-value
Aged 19–29, 542/12 4 (1.4) Reference 5 (2.2) 1.3 (0.4–5.0) 0.701 3 (12.0) 6.6 (1.2–36.8) 0.029
Aged 30–39, 604/34 6 (2.0) Reference 25 (9.3) 4.6 (1.8–12.0) 0.002 3 (7.1) 2.9 (0.6–13.4) 0.176
Aged 40–49, 611/20 3 (1.0) Reference 13 (4.7) 3.7 (1.0–13.5) 0.046 4 (10.3) 6.7 (1.5–33.5) 0.016
Aged 50–59, 529/35 17 (5.6) Reference 16 (7.8) 1.3 (0.6–2.7) 0.553 2 (9.1) 1.1 (0.2–5.6) 0.902
Aged 60–69, 409/41 21 (8.6) Reference 19 (12.8) 1.3 (0.6–2.5) 0.506 1 (6.7) 0.4 (0.1–4.0) 0.459
Total, 2695/142 51 (3.6) Reference 78 (6.9) 1.8 (1.3–2.7)a 0.002a 13 (9.1) 2.2 (1.1–4.3)a 0.018a