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Biometrika 1982 69(3):533-538; doi:10.1093/biomet/69.3.533
© 1982 by Biometrika Trust
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A note on regression analysis of ordinal data with variability of classification

V. T. FAREWELL

Fred Hutchinson Cancer Research Center Seattle, Washington, U.S.A.

The effect of observation variability in the classification of an ordinal response is examined within the framework of the proportional hazards regression model for ordinal data. A model is proposed which incorporates this type of variability and the behaviour of the proportional hazards model when this new model is appropriate is examined. Four data sets are used to illustrate the practical application of the model.

Key Words: Bias • Classification variability • Gamma distribution • Pitman efficiency • Proportional hazards model


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