Which research design should be used to determine whether there is a difference in the effectiveness of two preoperative preparation methods on length of stay?

a. Survey design
b. Experimental design
c. Nonexperimental design
d. Descriptive comparison design


ANS: B

A
A survey design will describe but not address differences.
B
Experimental designs will allow the researcher to look for differences between the outcomes of the two different preparation methods.
C
Nonexperimental designs will not allow the researcher to answer questions about differences between groups.
D
As a nonexperimental design, it addresses relationships among variables in groups.

Nursing

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