1. Item analysis for the written test of Taiwanese board certification examination in anaesthesiology using the Rasch model 
K.-Y. Chang, M.-Y. Tsou, K.-H. Chan, S.-H. Chang, J.J. Tai, H.-H. Chen 
British Journal of Anaesthesia 
Volume 104, Issue 6, Pages (June 2010)
DOI: /bja/aeq097
Copyright © 2010 The Author(s) Terms and Conditions

2. Fig 1
Item distribution map for person and item measures on the same scale. Each ‘X’ represents an examinee. The vertical dashed line and nearby figures represent the common logit scale of person ability and item difficulty. The two horizontal lines indicate the upper and lower limits of person ability in the certification examination. The figures with the letter ‘Q’ at the right side of the vertical dashed line represent item numbers in the examination. This map does not contain the misfit item and 17 items correctly answered by all the examinees.
British Journal of Anaesthesia  , DOI: ( /bja/aeq097)
Copyright © 2010 The Author(s) Terms and Conditions

3. Fig 2
Virtual failure rate for different criteria based on the results of the Rasch analysis. Virtual failure rate in the certification examination increases with elevation of the criteria based on the results of the Rasch analysis.
British Journal of Anaesthesia  , DOI: ( /bja/aeq097)
Copyright © 2010 The Author(s) Terms and Conditions