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Relationship between 25-(OH) D and the severity of WML
| WML | n | 25-(OH) D <20 ng/mL | 25-(OH) D ≥20 ng/mL | χ2 value | p |
|---|---|---|---|---|---|
| Mild | 123 | 60 (48.8) | 63 (51.2) | 6.248 | 0.044 |
| Moderate | 51 | 29 (56.9) | 22 (43.1) | ||
| Severe | 52 | 36 (69.2) | 16 (30.8) |
Trend test: χ2 = 6.150, p = 0.013.
