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KMID : 1038320180150010017
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2018 Volume.15 No. 1 p.17 ~ p.17
Examiner seniority and experience are associated with bias when scoring communication but not examination skills in Objective Structured Clinical Examinations (OSCEs) in Australia
Chong Lauren

Taylor Silas
Haywood Matthew
Adelstein Barbara-Ann
Shulruf Boaz
Abstract
Purpose: There is good understanding of biases which may influence OSCE examiners¡¯ scoring, with recent research attempting to establish the magnitude of their impact. However, the influence of examiner experience, clinical seniority and occupation on communication and physical examination scores in OSCEs has not yet been clearly established.

Methods: We compared the mean scores awarded for generic and clinical communication and physical examination skills in relation to examiner characteristics (gender, examining experience, occupation, seniority and speciality) across two undergraduate Medicine OSCEs. The statistical significance of differences were calculated using two-tailed independent t-test and ANOVA.

Results: Five hundred and seventeen students were examined by 237 examiners at UNSW in 2014 and 2016. Examiner gender, occupation (academic, clinician or clinical tutor) and job type (specialist or generalist) did not significantly impact on scores. Junior doctors scored consistently higher than senior doctors in all domains; this difference was statistically significant for generic and clinical communication scores. Examiner experience was significantly inversely correlated with generic communication scores.

Conclusion: We suggest assessment of examination skills is less susceptible to bias because this process is fairly prescriptive, affording greater scoring objectivity. We recommend training that defines the marking criteria, teaching curriculum and expected level of performance in communication skills to reduce bias in OSCE assessment.
KEYWORD
Examiner, bias, communication, examination, OSCE, Australia
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