How might the selection of groups in observational studies affect the construct validity of the study?
A) Populations sampled from might be too general
B) Populations sampled from might not be representative
C) Subjects' status on the characteristic of interest might vary systematically
D) Subjects might show random variation on other characteristics of interest
Correct Answer:
Verified
Q5: What kind of interpretations can be made
Q6: What is the independent variable in case-control
Q7: What is the role of the experimenter
Q8: How should the control group be selected?
A)
Q9: How do case-control and cohort designs differ?
A)
Q10: What is a cohort design?
A) A strategy
Q11: How are accelerated multi-group cohort longitudinal designs
Q12: Which of the following is a weakness
Q13: What is the goal of cross-sectional research?
A)
Q14: What is a case-control design?
A) A study
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