Question

the national health and nutrition examination survey (NHANES) is a large and ongoing series of studies that investigate questions about the health and nutrition of adults and children in the US. The survey is unique because if combines interviews and physical examinations.

studies that are part of NHANES are what kind of studies?

- observational

- experiments

Answer 1

Studies that are part of NHANES are obsevational studies because in an obsevational study only data is collected. Researchers simply collect data based on what is seen and heard and infer based on the data collected. In this case interviews and physical examinations are being done to collect the data, hence it is an observational study. Researcher does not interfere with the subjects (in this case adults and childeren).

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