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. 2021 Oct 11;13(1):16–33. doi: 10.1093/advances/nmab106

FIGURE 7.

FIGURE 7

Association of serum folate with response to vitamin B-12 treatment in asymptomatic, vitamin B-12–deficient Chilean elderly individuals. Increase in the combined indicator of vitamin B-12 status (cB12) was attenuated in subjects with high serum folate (≥33.9 nmol/L) compared with those with low serum folate (<33.9 nmol/L). Median values: cB12 = −0.88; serum folate = 33.9 nmol/L. Symbols represent means ± SEs. Significant differences (P < 0.05 by 2-factor repeated-measures ANOVA followed by Tukey's honestly significant difference test). NS, not statistically significant (P > 0.05). B12, vitamin B-12. Reproduced from reference 29 with permission.