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Question 1 of 25
hard
In medical reading case 394, a study reports that recovery was faster in patients who received early counseling, but it did not randomly assign patients. Which conclusion is most careful?
A
Counseling definitely caused every recovery.
B
The study proves medicine was unnecessary.
C
Patients without counseling cannot recover.
D
The counseling may be associated with faster recovery, but causation is not proven.