Practice Quiz

Registered Dietitian Exam Prep

Category - Nutrition Science

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A cross-sectional study is used when a researcher wants to:
  1. Compare frequencies of many different diseases in a community over a year
  2. Collect information about one type of disease in a group of people over a defined time period
  3. Measure lab values of study subjects at specific intervals
  4. Control for confounding factors
Explanation
Answer: B - A cross-sectional study is used to collect information about one type of disease in a group of people over a defined time period. Cross-sectional studies are not used to compare multiple diseases. Confounding factors are exposures or variables that may affect the outcome of a study, and which study investigators control for using statistical methods.
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