Percentage incidence of dissection was constant in various groups and was comparable with overall incidence
| Dissection | Incidence (%) |
|---|---|
| Overall incidence | 0.26 |
| Diagnostic procedures | 0.25 |
| Interventional procedures | 0.26 |
| Incidence in men | 0.24 |
| Incidence in women | 0.27 |