Vitamin B-12 example.

1ISrct: Intake-Status RCT data; ISobs: Intake-Status observational data; RI: Repeated Intake data; RS: Repeated Status data.2Correlation between I and S calculated as multiplied by SDNI/SDNS.3Attenuation factor defined as ratio of bobs to .4Calculated from equation 10. The percentage in parentheses indicates how much of the total variance of differences between observed and true log-intakes (xi –Ii) is explained by intake-related bias.5Coefficient of Variation of Nutrient Requirements, calculated from equation 4.Estimates of association parameters (,) and related statistics. Inputs according to the chosen model are shown in bold.