False Positive Diagnosis of Mood Disorders in an Objective Structured Clinical Examination Setting

Given that the topic of bipolar disorder overdiagnosis has been relatively neglected in theliterature and considering its significance in psychiatric training. the present study was conducted through anobjective structured clinical examination (osce) on psychiatric residents to assess the validity of their clinicaldiagnosis.methods: twenty forth residents participated in the examination. the first station (the mood disorderstation) was designed to explore clinical skill of psychiatric residents in diagnosing major depressive disorderthrough a clinical interview with a simulated patient. the rating checklist to evaluate the residents included 11items. each item was scored on a likert scale. two raters completed the checklists independently.results: out of 24 residents, 15 individuals (62.5%) diagnosed major depressive disorder accurately and 9individuals (37.5%) diagnosed bipolar disorder instead of major depressive disorder. the score of the lastpsychiatric written exam (p<0.05), the mean score of osce on the mood disorder station (p<0.001), and thetotal score of the osce (six stations) (p=0.09) were significantly higher in the group who correctly diagnosedmajor depressive disorder than the group who did not.conclusion: current study provides evidence for bipolar disorder overdiagnosis and opens up new scopesfor improvement in psychiatric training.iranian journal of psychiatry and behavioral sciences (ijpbs), volume 3, number 1, spring and summer 2009: 15-18 .