From: Association of migraines with brain tumors: a nationwide population-based study
Presence of prior migraines | Excluding patients who received a first-time migraine diagnosis within 1 year prior to the index date | Excluding patients who received a first-time migraine diagnosis within 2 years prior to the index date | Excluding patients who received a first-time migraine diagnosis within 3 years prior to the index date | |||
---|---|---|---|---|---|---|
Patients with a brain tumor n = 11,184 | Controls n = 11,307 | Patients with a brain tumor n = 11,136 | Controls n = 11,294 | Patients with a brain tumor n = 11,104 | Controls n = 11,169 | |
Yes | 415 (3.71) | 217 (1.92) | 368 (3.30) | 204 (1.81) | 337 (3.03) | 183 (1.62) |
No | 10,769 (96.29) | 11,090 (98.08) | 10,760 (97.57) | 11,090 (98.19) | 10,767 (96.97) | 11,090 (99.29) |
OR a(95% CI) | 1.99*** (1.68~ 2.34) | 1.00 | 1.87*** (1.57~ 2.23) | 1.00 | 1.91*** (1.59~ 2.29) | 1.00 |