A nurse has defined the research question as, "How does oral nutritional supplementation during dialysis treatments affect the serum albumin levels of adult patients who have chronic kidney disease Stage 5?"
In this question, what is the independent variable?
a. Adult patients with chronic kidney disease Stage 5
b. Oral nutritional supplementation
c. During dialysis treatments
d. Serum albumin levels
ANS: B
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A The population being studied is adult patients with chronic kidney disease Stage 5.
B Oral nutritional supplementation is the intervention administered to effect a change in the patients' serum albumin levels. Thus oral nutritional supplementation is the independent variable.
C The time of the intervention is defined as during dialysis treatments.
D The study expects to affect the serum albumin levels of patients who receive the intervention. Thus serum albumin levels constitute the dependent variable.
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