Articles

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A New Exact and More Powerful Unconditional Test of no Treatment Effect from Binary Matched Pairs, Biometrics (2008)
We consider the problem of testing for a difference in the probability of success from...
 

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Multinomial Logistic Regression: An Application to Estimating Performance of a Multiple Screening Test for Bowel Cancer when Negatives are Unverified. (with Don J. Frommer), JRSSC (2008)
This paper describes a method of estimating the performance of a multiple screening test where...
 

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Exact Confidence Bounds for the Risk Ratio in 2x2 Tables with Structural Zero (with Max Moldovan), Biometrical Journal (2007)
This paper examines exact one-sided confidence limits for the risk ratio in a 2x2 table...
 

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Exact one-sided confidence limits for the difference between two correlated proportions (with Max V. Moldovan), Statistics in Medicine (2007)
We construct exact and optimal one-sided upper and lower confidence bounds for the difference between...
 

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Efficient and Exact Tests of the Risk Ratio in a Correlated 2x2 Table with Structural Zero, Computational Statistics and Data Analysis (2007)
For a correlated 2x2 table where the (01) cell is empty by design, the parameter...
 

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Unconditional efficient one-sided confidence limits for the odds ratio based on conditional likelihood (with Max Moldovan), Statistics in Medicine (2007)
We compare various one-sided confidence limits for the odds ratio in a 2x2 table. The...
 

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Improved Buehler limits based on refined designated statistics (with Paul Kabaila), Journal of Statistical Planning and Inference (2006)

The Buehler upper confidence limit is as small as possible, subject to the constraints that...

 

Working Papers

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On approximate conditioning and higher order asymptotics for 2x2 tables, MBS Working papers (2008)
For testing canonical parameters in a continuous exponential family, P-values based on higher order asymptotic...
 

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Exact tests of non-inferiority from independent binomial data based on second order test statistics (2008)
Recent advances in likelihood asymptotics (Reid, 2003) lead to pivotal quantities that are closer to...
 

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Exact P-values for Discrete Models obtained by Estimation and Maximisation, Melbourne Business School (2007)
In constructing exact tests, one must deal with the possible dependence of the P-value on...