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Chapter 16 Research. Objectives Understand the various forms of nutrition research including epidemiological, historical, descriptive survey, analytical survey, and experimental. Be able to identify which type of research is being used to generate the findings you are observing

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chapter 16 research
Chapter 16 Research

Objectives

  • Understand the various forms of nutrition research including epidemiological, historical, descriptive survey, analytical survey, and experimental.
  • Be able to identify which type of research is being used to generate the findings you are observing
  • Understand how to identify the quality of the research by examining values such as validity, reliability, accuracy and precision
  • Know some of the insoluble and soluble problems that can be faced when doing research.
  • Understand some of the limitations of Web based information on nutrition and supplementation.
slide2

Major Types of Research Used in Nutrition Research

  • Epidemiological research
    • Prospective (cohort)
    • Retrospective
  • Historical
  • Descriptive survey
  • Analytical survey
  • Experimental
    • Pre-test,post-test; crossover
    • Clinical trials
slide3

Descriptive Survey

Table 16-2, p. 555

slide4

Analytical Survey Method

Fig. 16-2, p. 557

slide5

Experimental Method

Fig. 16-3, p. 558

slide10

How to Determine the Quality of the Research

  • Validity – concerned with the effectiveness of the measuring instrument
    • Face validity
    • Criterion validity
    • Internal or external validity
  • Accuracy
  • Reliability
  • Precision