Assessment of MBBS medical students using (OSCE), comparing the modified borderline group method (MBGM), the modified Angoff method (MAM) and the holistic method of 50%

Background: The final clinical examination in obstetrics and gynaecology is usually done by the traditional long obstetric case in the majority of medical schools worldwide. In the past few decades a move towards the (OSCE) has taken place. The objective of this study was to assess the performance of the (MBBS) medical students in the (OSCE) final obstetrics and gynaecology clinical examination, comparing three different standard setting methods: the MBGM, the MAM) and the holistic method of (50%). Methods: This was a descriptive study conducted in the Faculty of Medicine in the National Ribat University, Sudan. One hundred and three students who constituted all the medical students in the final MBBS clinical examination were enrolled in this study. The students were examined by the (OSCE) in 10 stations. Thirty examiners participated in the examination. The cut score was determined by the (MBGM). The same stations were also scored by another different group of 16 examiners; who acted as judges to determine the cut score by the (MAM). We took the (50%) as a fixed reference cut score for this (OSCE) examination. A comparison was made between the three standard setting methods. Result: The No. of students who passed the clinical examination by the (MBGM) and (MAM) was the same 85(82.5%) passed the examination by both methods. Results showed that 85 (82.5%) and 94(91.3%) passed by the (MBGM) and the fixed (50%) respectively. Eighty five (82.5%) and 94 (91.3%) of the students passed the exam by (MAM) and the fixed cut off score of (50%) respectively Conclusion: There is no significant difference in the number of students who passed/failed the clinical examination between (MBGM), (MAM) and the holistic method of (50%). (MAM) can be used in the clinical examination.