When should a nurse researcher include an extraneous variable as part of a study's design?
A) When it is nonmodifiable, such as age or gender
B) When it is an important consideration for the outcome
C) When the researcher is limited by time and monetary influences
D) When it would not make a difference in the overall study outcome

Question

Quizplus · Accepted Answer

Correct B: If a researcher believes that an extraneous variable is important to the outcome,it should be included in the design.
Incorrect A: Nonmodifiable variables can be controlled for statistically and do not have to be written into a design.
Incorrect C: Time and financial demands should not solely influence whether extraneous variables are part of a study's design.
Incorrect D: If the extraneous variables would not make a difference in the study outcome,then inclusion in the design would be superfluous.

When Should a Nurse Researcher Include an Extraneous Variable as Part