In a randomized controlled trial to determine the effectiveness of oxygen therapy in reducing dyspne. Question
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In a randomized controlled trial to determine the effectiveness of oxygen therapy in reducing dyspnea among patients with palliative therapy, 50 patients were randomly assigned to receive oxygen therapy 2L/minute or room air via nasal cannula. Eligible patients were > 18 years of age, with Pa02 > 55 mm/Hg, and reported dyspnea at rest. Subjects reported their level of dyspnea using a 100 mm visual analog scale. A strategy employed to reduce bias in this study was:
A.
random assignment.
B.
100 mm visual analog scale to measure dyspnea.
C.
a sufficiently large sample size.
D.
narrow inclusion criteria.
SCIENCE
HEALTH SCIENCE
NURSING
NURS 8119
In a randomized controlled trial to determine the effectiveness of oxygen therapy in reducing dyspne
