摘要：Purpose:In 2002,extended-matching type (R-type) items were introduced to the Korean Medical Licensing Examination. To evaluate the usability of R-type items,the results of the Korean Medical Licensing Examination in 2002 and 2003 were analyzed based on item types and knowledge levels. Methods:Item parameters,such as difficulty and discrimination indexes,were calculated using the classical test theory. The item parameters were compared across three item types and three knowledge levels. Results:The values of R-type item parameters were higher than those of A- or K-type items. There was no significant difference in item parameters according to knowledge level,including recall,interpretation,and problem solving. The reliability of R-type items exceeded 0.99. With the R-type,an increasing number in correct answers was associated with a decreasing difficulty index. Conclusion:The introduction of R-type items is favorable from the perspective of item parameters. However,an increase in the number of correct answers in pick 'n' - type questions results in the items being more difficult to solve.
关键词：Medical education;Classical test theory;Difficulty index;Discrimination index; Extended-matching type item
