This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
[{'content': "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 ? \nSelect and explain. \nA. Paired t-test, B. Unpaired or independent t-test, C. Analysis of variance, D. Chi-square test", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Paired t-test In this question :- i) Data is quantitative (BP) ii) Paired sample from same patients, before and after treatment. o So, Paired t-test is the best.", 'role': 'assistant'}]