Table 5 Risk of insomnia ¹ at 11-year follow-up according to the combined effect of CMSCs ² (non-widespread vs. widespread) and headache (yes/no)

Insomnia ¹

Insomnia ¹

Insomnia ¹

N, total = 11,558

N, total = 2109

OR (95% CI)

N, total = 10,324

N, total = 2000

OR (95% CI)

N, total = 8066

OR (95% CI)

No headache or CMSCs

7263

1080

1.0 (ref)

7263

1080

1.0 (ref)

7263

1080

1.0 (ref)

CMSCs²

4295

1029

1.6 (1.4 – 1.7)

3061

920

1.9 (1.7 – 2.2)

803

283

2.2 (1.9 – 2.6)*

Non-widespread CMSCs

2513

540

1.4 (1.3 – 1.6)

1357

339

1.6 (1.4 – 1.9)

262

86

2.2 (1.7 – 3.0)*

Widespread³ CMSCs

1782

489

1.8 (1.5 – 2.0)

1704

581

2.2 (1.9 – 2.5)

541

197

2.2 (1.8 – 2.7)