Do you think a Cross Sectional study was the best study design
for NHANES? What were the benefits of using a Cross Sectional study
in NHANES scenario? Is another designs feasible? What are the
limitations of NHANES study? Would you have done anything
differently?
NHANES
the national health and nutritional examination survey is a survey research program conducted by national centers for health statistics. It help to assess the health and nutritional status of adult and children and track the change over time .
The survey combines interview, physical examination and laboratory test.
all data NHANES is cross sectional, which limits the type of study that can be performed
limitation of cross sectional study
- the temporal relationship between exposure and disease outcomes can be unclear
- identification of case of long duration
Benefits of cross section study
- data on exposure status and health outcomes status are collected from each respondents at the same point in time
-they assess the needs of population
_ not repeated at the same individual
I think another study is feasible for NHANES
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