Table. Correlation Between Lindegaard Index (LI) and the Volume of White Matter Hyperintensity Lesions (WMHs) in Different Periods of the Disease Course.
| Characteristic | Duration From Headache Onset, d | |||||
|---|---|---|---|---|---|---|
| 1-7 | 8-14 | 15-21 | 22-28 | 29-60 | 61-90 | |
| No. of scans | 18 | 28 | 21 | 23 | 35 | 36 |
| Whole brain, r | 0.014 | 0.906 | 0.640 | 0.312 | 0.333 | −0.155 |
| P value | .87 | <.001 | .008 | .22 | .18 | .44 |
| Periventricular white matter, r | 0.031 | 0.908 | 0.496 | 0.384 | 0.406 | −0.131 |
| P value | .90 | <.001 | .051 | .13 | .01 | .51 |
| Deep white matter, r | 0.051 | 0.806 | 0.454 | −0.018 | 0.017 | −0.153 |
| P value | .84 | <.001 | .08 | .09 | .95 | .45 |
| Brainstem and cerebellum, r | 0.116 | 0.311 | −0.030 | 0.019 | 0.003 | −0.156 |
| P value | .65 | .26 | .91 | .94 | .99 | .44 |