Because we are observing new cases of disease in a cohort study, what kind of relationship may we establish? Group of an...
Because we are observing new cases of disease in a cohort study, what kind of relationship may we establish?
Group of answer choices
Confounding
Temporal
Positive
Negative
Why might there be uncertainty with the association between an exposure and disease in an observational study?
Group of answer choices
The association may be due to the factors that led people to be exposed (e.g. confounders) rather than the exposure itself.
Case-control studies are more valid, so they should be the standard of measuring association
Observational studies have less people than an experimental study, so it is harder to make conclusions.
Researchers disagree about how to define exposure
The hallmark of a cohort study is comparing_____ with _____.
Group of answer choices
exposed and non-exposed
randomly selected with non-randomly selected
diseased with non-diseased
patients with community
Homework Answers
Cohort study uses temporal relationship (prospective or retrospective study design) between exposure and disease occurrence. Prospective study is conducted from present to future. While retrospective study goes from present to past.
Answer is temporal
There might be uncertainty in the association of exposure with disease as there is no control on variables in an observational study.
Answer is :The association may be due to the factors that led people to be exposed (e.g. confounders) rather than the exposure itself.
The hallmark of cohort study is comparing exposed with non-exposed.
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