a Folate is based on μg of folate rather than Dietary Folate Equivalents for this example.
b Average of 7 days of intake.
c If Mr. G's mean calcium intake had been 1,300 mg instead of 600, one could determine whether intake was adequate after calculating the z-statistic (1,300 − 1,200)/128, where 128 is obtained as 339/7 days. In this case, the resulting z-statistic would have been 0.78, and one would be unable, at any reasonable level of assurance, to conclude that Mr. G's calcium intake is adequate.
d RDA = Recommended Dietary Allowance.
e EAR = Estimated Average Requirement.
f Estimated as EAR × CV.
g See Appendix Table B-2.
h The standard deviation (SD) of the difference
i AI = Adequate Intake.
j Estimated using the algorithms described in Appendix B; see the Appendix for details of these calculations.
k One should use clinical judgment to obtain additional information if intake appears to be extremely low relative to the AI.