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Questions and Answers
Which of the following areas can be included in health research?
Which of the following areas can be included in health research?
- Improving the health of the population and predicting progression of a disease in a patient
- Improving the health of the population, predicting progression of a disease in a patient, and exploring societal interventions for disease prevention
- Improving the health of the population, preventing various diseases, and exploring societal interventions for disease prevention (correct)
- None of the above
What is appropriate for sample and sample size?
What is appropriate for sample and sample size?
- Neither 'a' nor 'b'
- Should be representative of the population [External validity or generalizability]
- Should be adequate [power to draw meaningful inferences]
- Both 'a' and 'b' (correct)
Which of the following statements are correct regarding defining inclusion and exclusion criteria in a study protocol?
Which of the following statements are correct regarding defining inclusion and exclusion criteria in a study protocol?
- They should be very large in number
- They should be vague because this will allow greater and easy enrollment
- It is not important
- They should be very specific (correct)
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Study Notes
Health Research Areas
- Epidemiological studies to identify risk factors for diseases
- Clinical trials to evaluate the efficacy of new treatments
- Health services research to assess quality of care
- Health policy research to inform policy decisions
Sample and Sample Size
- Representative sample: ensures generalizability of findings to the target population
- Sample size calculation: depends on desired level of precision, significance, and power of the study
- Sample size should be large enough to detect statistically significant differences
Inclusion and Exclusion Criteria
- Inclusion criteria: define characteristics of participants eligible for the study
- Exclusion criteria: define characteristics that make participants ineligible for the study
- Clearly defined criteria ensure consistency and minimize bias in participant selection
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