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4514 Social & Preventive Medicine

A cardiologist wants to study the effect of an antihypeensive drug. He notes down the initial systolic blood pressure (mmHg) of 50 patients and then administers the drug on them. After a week’s tretment, he measures the systolic blood pressure again. Which of the following is the most aproprate statistical test of significance to test the statistical significance of the change in blood pressure ?

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