Table 3 Multivariable* adjusted hazard ratios (95% confidence intervals) of brain tumor stratified by age according to headache status in the Women’s Health Study (N = 39,534)
From: Headache, migraine and risk of brain tumors in women: prospective cohort study
No headache (n = 26,512) | Any headache (n = 13,022) | Non-migraine headache (n = 5,731) | Any migraine (n = 7,291) | |||||
|---|---|---|---|---|---|---|---|---|
No. of cases | Hazard ratio* (95% CI) | No. of cases | Hazard ratio* (95% CI) | No. of cases | Hazard ratio* (95% CI) | No. of cases | Hazard ratio* (95% CI) | |
<55 years of age at baseline (N = 23,849) | 13 | 1.00 (ref) | 12 | 1.57 (0.72, 3.46) | 6 | 1.79 (0.68, 4.72) | 6 | 1.40 (0.53, 3.69) |
≥55 years of age at baseline (N = 15,685) | 19 | 1.00 (ref) | 8 | 1.10 (0.48, 2.53) | 4 | 1.28 (0.43, 3.78) | 4 | 0.96 (0.33, 2.85) |