Figure 1.
Diagram showing the framework of the Mendelian randomization approach used in this study.
Figure 2.
Flow-diagram of participants in the study, and reasons for exclusions.
Table 1.
Characteristics of the study population.
Table 2.
Association of maternal dietary vitamin B-12 intake during pregnancy with offspring IQ at age 8. N = 4787 with complete data on exposure, outcome and covariables in any model.
Table 3.
Association of maternal genotype at SNPs related to vitamin B-12 metabolism with maternal dietary intake at 32 weeks pregnant and vitamin B-12 cord blood concentration.
Table 4.
Association of maternal TCN2 haplotypes with vitamin B-12 cord blood levels and offspring IQ at age 8.
Table 5.
Association of maternal genotype at SNPs related to vitamin B-12 metabolism with offspring IQ at age 8.