The term “dietary intake” during this module will embrace foods and beverages reported on the twenty four-hour recollects additionally to supplement intake from the household interview. Researchers are usually fascinated by estimating the distribution of usual intake of dietary components for a population from all sources, as well as supplements. This module can target using the method developed by researchers at NCI and elsewhere (the “NCI technique”) for this purpose.
Information iconIMPORTANT NOTE
Many of the statistical strategies employed in this course are advanced, and may require consultation with a statistician. For modules 18-22, it is required that you’ve got the statistical information of mixed effects models, and program data of calling in SAS macros. Since Module eighteen provides the background data for Modules 19-22, it is advised that you simply fastidiously read Module 18 initial before tackling alternative modules.
Info iconIMPORTANT NOTE
Note that the tactic described during this tutorial is applicable to the NHANES 2003-2006 information; starting in 2007-2008 dietary supplement data additionally were collected using twenty four-hour recalls.