Table 6 Cerebrovascular reactivity (% changes) in response to photic stimulation in the three groups
CVR of different vessles | Migraine (37cases) (% change) | Tension headache (24 cases) (% change) | Control (50 normal) (% change) | P- value between control vs. tension headache | P- value between control vs. migraine | P- value between the three groups Kruskal-Wallis |
|---|---|---|---|---|---|---|
CVR of MCA | 15.0% | 8.7% | 5.0% | 0.47 | 0.012 | 0.013 |
CVR of ACA | 12.0% | 4.5% | 7.3% | 0.45 | 0.16 | 0.263 |
CVR of PCA | 10.8% | 6.4% | 6.1% | 0.95 | 0.33 | 0.267 |
CVR of VA | 8.4% | 13.2% | 3.3% | 0.014 | 0.33 | 0.130 |