Figure 1.

Forest plots comparing between SCD patients with low and no-low serum vitamin B₁₂ level for (A) the level of hemoglobin, (B) the level of MCV, and (C) the functional disability rating scale on admission. No statistically significant difference in the level of hemoglobin, MCV, or the functional disability rating scale on admission was found between SCD patients with low and no-low serum vitamin B₁₂ level. CI = confidence interval, MCV = mean corpuscular volume, SCD = subacute combined degeneration.