Table 2. Methionine to Homocysteine Status According to Quartiles of Folate and Vitamin B12.
| Variable | Methionine to Homocysteine Status, Median (IQR) | P Valuea |
|---|---|---|
| Folate | ||
| Quartile 1 (<82.5 ng/mL) | 1.4 (1.00-1.9) | <.001 |
| Quartile 2 (82.6-104.1 ng/mL) | 1.8 (1.4-2.2) | |
| Quartile 3 (104.2-138.7 ng/mL) | 1.9 (1.5-2.5) | |
| Quartile 4 (>138.7 ng/mL) | 2.1 (1.6-2.7) | |
| Vitamin B12 | ||
| Quartile 1 (<364.6 pg/mL) | 1.6 (1.2-2.0) | <.001 |
| Quartile 2 (364.7-470.3 pg/mL) | 1.7 (1.3-2.2) | |
| Quartile 3 (470.4-618.0 pg/mL) | 1.9 (1.5-2.4) | |
| Quartile 4 (>618.0 pg/mL) | 2.1 (1.5-2.7) |
Abbreviation: IQR, interquartile range.
a
Comparisons were performed using the Kruskal-Wallis test.