Plasma Homocysteine and Serum Folate and Vitamin B₁₂ Levels in Mild Cognitive Impairment and Alzheimer's Disease: A Case-Control Study.

In the MCI group, the chi-squared tests that were conducted before the individual OR comparisons showed nearly significant differences among the three folate tertiles in the crude analysis ( p = 0.042), adjusted model 1 ( p = 0.031), and adjusted model 2 ( p = 0.037).

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