Research Article
Circulating Unmetabolized Folic Acid: Relationship to Folate Status and Effect of Supplementation
Table 2
Patient characteristics.
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a value, as determined by Student’s -test, Wilcoxon-Mann-Whitney test, or Fisher’s exact test. bData was missing for one patient (i.e., ). cThe proportion of women who had been pregnant before was not significantly different between the two groups (9/19 versus 10/19; Fisher’s exact test, ). |