What type of study would be most appropriate if a nurse researcher wants to determine if historical exposure to a specific water source is associated with later development of inflammatory bowel disease?
a. Ex post facto design
b. Experimental design
c. Qualitative design
d. Therapeutic design
ANS: A
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A Ex post facto design is used when the researcher wants to determine whether one thing is related to or causes another thing.
B Experimental design tests efficacy of an intervention.
C Qualitative design would not be able to assess relationships or causation.
D Therapeutic design is not a designated design; therapy category is testing efficacy.
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