Which question should the nurse ask in order to judge the validity of a research study?
a. What reliability information has been provided?
b. Are the instrument measures applied consistently?
c. Does the instrument measure what it is supposed to measure?
d. How much random error exists?
Question 2
A nurse evaluates the results of two different studies examining the relationship between time of day and sundowning in the geriatric setting. After 1 month, the nurse realizes that there is a difference of 1 hour in the instruments used for measurement.
What conclusion can be drawn about the type of threat this causes the study?
a. Validity
b. Reliability
c. Causality
d. Truthfulness
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