Which type of studies are preferable when little is known about the disease because they allow the investigators to evaluate more than one hypothesis?
A) Cohort studies
B) Ecological studies
C) Case-control studies
D) Cross-sectional studies
Correct Answer:
Verified
Q46: Ecological studies can be done quickly and
Q47: Trials that prevent or delay the onset
Q48: When trials involve procedures rather than pills,
Q49: Retrospective cohort studies are considered less vulnerable
Q50: Masking guarantees comparable follow-up efforts and outcome
Q52: Which of the following depends on the
Q53: The most difficult aspect of using which
Q54: In which sampling approach does the investigator
Q55: Which type of bias can occur in
Q56: The best way to ensure that which
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