Independent factors associated with MI caused by sVAD
| Factors | Univariate analysis | P | Multivariable analysis | P |
| OR (95% CI) | OR (95% CI) | |||
| Age | 0.907 (0.873 to 0.943) | 0.000 | 0.935 (0.892 to 0.981) | 0.006 |
| Non-sudden onset | 3.489 (1.322 to 9.206) | 0.012 | 3.507 (1.060 to 11.599) | 0.040 |
| Hypertension | 0.382 (0.182 to 0.801) | 0.011 | 1.085 (0.370 to 3.179) | 0.882 |
| Diabetes | 0.282 (0.121 to 0.658) | 0.003 | 0.559 (0.187 to 1.669) | 0.297 |
| Minor neck injury | 18.947 (2.316 to 155.00) | 0.006 | 2.653 (0.264 to 26.676) | 0.408 |
| Headache | 11.000 (4.007 to 30.196) | 0.000 | 5.426 (1.673 to 17.599) | 0.005 |
| Lateral MI | 6.665 (2.178 to 20.391) | 0.001 | 2.477 (0.674 to 9.108) | 0.172 |
MI, medullary infarction; sVAD, spontaneous vertebral artery dissection.