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Fig. 3 | BMC Medical Education

Fig. 3

From: Assessing professional competence in optometry – a review of the development and validity of the written component of the competency in optometry examination (COE)

Fig. 3

Correlation between candidate performance and cutscore for the multiple choice question (MCQ) and short answer question (SAQ) exams. A strong relationship was observed for the MCQ exams (r2 = 0.74, p < 0.001) and the SAQ exams from September 2017 to August 2019 (r2 = 0.95, p = 0.005). The SAQ exams from April 2014 to April 2017 used a standard cutscore of 50%. The high correlation for the SAQ exams from September 2017 to August 2019 highlights the benefit of using Rasch analysis to set the cutscore compared to the 50% cutscore used previously

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