Presentation and comorbidity
| Per cent | No of studies | |
|---|---|---|
| Observational data (440 patients, 70% men, mean age 63 years on presentation) | 9 | |
| Index presentation | ||
| Hemorrhage | 7 | 8 |
| Stroke (brainstem of distal) | 34 | 8 |
| Brainstem compression/ischemia | 28 | 8 |
| Incidental | 30 | 8 |
| Comorbidity | ||
| Hypertension | 66 | 6 |
| Smoking | 41 | 3 |
| Hypercholesterolemia | 36 | 4 |
| Coronary artery heart disease | 20 | 4 |
| Diabetes | 12 | 5 |
| Peripheral vascular disease | 11 | 2 |
No of studies reflects the number of publications supplying data for each parameter.