Conditional logistic multivariable analysis model for the association with a diagnosis of an incidental unruptured intracranial aneurysm between the 1:1 matched case-control patients
| Characteristics | OR | 95% CI | P value |
| Ever-smoker | 3.69 | 1.61 to 8.50 | 0.002 |
| Chronic hypertension | 3.16 | 1.17 to 8.52 | 0.023 |
| Ever-smoker with chronic hypertension | 6.92 | 2.49 to 19.24 | <0.001 |
| Chronic headaches as reason for imaging | 2.9 | 1.51 to 5.57 | 0.001 |
An OR >1 corresponds to a higher odds of having an incidental unruptured intracranial aneurysm diagnosis in patients positive for that characteristic.
Figures in bold type denote statistical significance.