Analytical Study of Quantitative Indices of Multiple-choice Questions of Immunology Department in Ahvaz Jundishapur University of Medical Sciences

Considering the widespread use of MCQs in assessment of medical students, present study was conducted to item analyze of MCQs in immunology department at Ahvaz Jundishapur University of Medical Sciences in 2017. In this descriptive cross-sectional study, the data of MCQs designed by immunological faculties that corrected by the OP-Scan was assessed and explored the difficulty index, discrimination index and distractor options (808 MCQs). Then, data were analyzed using descriptive statistics and Pearson coefficient. The results showed the average of difficulty index of the MCQs was 0.59 ± 0.25, and 46.2% of the MCQs had a suitable difficulty. The average of the discrimination index of the MCQs was 0.25± 0.24 and 57.3% of the MCQs had a discrimination index. Accordingly, a Combination of the two difficulty and discrimination indices showed that only 248 MCQs (30.7%) were ideal. 1525 distractor option (62.9%) were functional distractor (FD) and 889 (37%) were non-functional distractor (NFDs). The findings showed that the MCQs required to be reviewed and improved.