NFS/NS & other terms
not further specified.
Food codes with NFS, NS, quantity not specified, or guideline amount
in the measure description are used when the amount of food eaten is not known.
For more information about the use of not specified items in survey
research, see documentation on
defaults used for coding.
Unexpected 0 values
- For a
food whose 100 gram measure contains a given nutrient, even a very small
serving amount of that food contains at least a trace of
that nutrient. However, due to downward rounding of final decimals less than 5, some
trace amounts may be displayed as zero. The number
of decimal places to which nutrient values are expressed varies by nutrient.