MEDI362 Lecture Notes - Lecture 5: Rigour, Face Validity, Nonprobability Sampling
7 Aug 2018
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Document Summary
Compare and contrast the requirements of survey and questionnaire design and qualitative research methods in the nutrition research context. Describe health outcome measures which are commonly used in nutrition research. Terminology: validity concerned with the integrity of the research outcomes. Rigour can apply to both qualitative and quantitative methods. Addresses the consistency and of the results: confirmability the degree to which the findings are determined by the respondents and conditions of the inquiry and not the biases, motivations, interests or perspectives of the inquirer. Testing our methods: when a tool is developed it is tested, small scale testing = pilot testing. Often used when a specific group is targeted. If it is possible to say a smallest difference (or treatment effect) of clinical interest (sdci: number of subjects so that there will be statistical significance if the true difference is at least sdci. Developing tools for use in research projects: using questionnaires, low cost (time and money)
