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9446 Social & Preventive Medicine

A cardiologist wants to study the effect of an atorvastatin drug. He notes down the initial cholesterol levels of 50 patients and then administers the drug on them. After a month&;s treatment, he measures the cholesterol level again. Which of the following is the most appropriate to test the statistical significance of the change in blood cholesterol.

APaired t-test
BUnpaired or independent t-test
CAnalysis of variance
DChi-square test
Social & Preventive Medicine
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