Table 3

Correlation coefficients between intakes and serum concentrations of folate and vitamin B12

Corresponding serum concentrations


All participants

(n = 167)

Participants without nausea (n = 121)2


r

p1

r

p1


Intakes3

Folate [μg/day]

0.251

0.001

0.245

0.007

[μg/1,000 kcal]

0.286

< 0.001

0.280

0.002

Vitamin B12 [μg/day]

0.174

0.025

0.249

0.006

[μg/1,000 kcal]

0.222

0.004

0.313

0.001


1Partial correlation analysis. Adjusted for research settings

All variables were log-transformed before analyses

2The participants with nausea were excluded from the analyses

3Folate and vitamin B12 intakes were assessed by a self-administered diet history questionnaire (DHQ)

Shiraishi et al. Nutrition Journal 2012 11:15   doi:10.1186/1475-2891-11-15

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