SAS Interview Questions & Answers:Clinical trials
1.Describe the phases of clinical trials? Ans:- These are the following four phases of the clinical trials: Phase 1: Test a new drug or treatment to a small group of people (20-80) to evaluate its safety. Phase 2: The experimental drug or treatment is given to a large group of people (100-300) to see that the drug is effective or not for that treatment. Phase 3: The experimental drug or treatment is given to a large group of people (1000-3000) to see its effectiveness, monitor side effects and compare it to commonly used treatments. Phase 4: The 4 phase study includes the post marketing studies including the drug's risk, benefits etc. 2. Describe the validation procedure? How would you perform the validation for TLG as well as analysis data set? Ans:- Validation procedure is used to check the output of the SAS program generated by the source programmer. In this process validator write the program and generate the output. If this output is same as the output gen...