The levels of difficulty and discrimination indices and relationship between them in four-response type multiple choice questions of pharmacology summative tests of Year II M.B.B.S students

Background: Item analysis is the process of collecting, summarising and using information from students' responses to assess the quality of test items. Difficulty index (P) and discrimination index (D) are two parameters which help to evaluate the standard of MCQ questions used in an examination, with abnormal values indicating poor quality.