_Which of the following is not a problem associated with observational studies?$?

Question

TuteeHUB · Accepted Answer

NA

TuteeHUB · Answer

The main conclusion may be invalid because of the confounding effects of uncontrolled variables

TuteeHUB · Answer

Estimates may be biased because of non-random sampling

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Observations have to be taken on groups of individuals rather than on individuals themselves

TuteeHUB · Answer

None of the above

1.	_Which of the following is not a problem associated with observational studies?$?
A.	The main conclusion may be invalid because of the confounding effects of uncontrolled variables
B.	Estimates may be biased because of non-random sampling
C.	Observations have to be taken on groups of individuals rather than on individuals themselves
D.	None of the above
Answer» E.

Discussion