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The objective of this research is to compare structured clinical examination (OSCE) scores in the 6th year medical students on all 5 skills: History taking skill, physical examination skill, manual skill, communication skill and laboratory interpretation skill. The research results will be beneficial for planning in teaching and learning process, and correcting weaknesses in clinical skills of medical students. The sample group is the 6th year medical students in Faculty of Medicine Siriraj Hospital, Mahidol University from the academic year 2013 to 2017, 3 examinations per academic year, a total of 15 examinations, with a total of 2,851 students (each student took 2 examinations/year). ANOVA was used for comparing OSCE scores and Pearson correlation was used for comparing passing rates of each group. The mean OSCE score of procedural skills was highest (65.02), while that of laboratory interpretation was lowest (52.15). The mean scores of each skill were positively correlated. The procedural skills were correlated to the laboratory interpretation skills (r = 0.482). The mean scores of all clinical skills of medical students were above the minimal passing level, except the laboratory interpretation. The institute should focus and train more students on the laboratory interpretation skill.
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