Community Medicine MCQ 008

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Two studies were completed to test the same hypothesis. Both studies showed a 20 percent reduction in mortality comparing the new treatment to the standard treatment. However, that finding in Study A was statistically significant at p < 0.05. What is the most likely cause of this difference in findings between the two studies?

A) Study A used larger samples that Study B.
B) Study A had more confounding variables that Study B.
C) Study A used lower doses of the treatments that Study B.
Sample Size Calculations in Clinical Research, Second Edition (Chapman & Hall/CRC Biostatistics Series)D) Study A used more chronically ill patients that Study B.
E) Study A used stratified, random sampling while Study B did not.

Answer

Category: PSM MCQs

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