References
- Agresti , A. 1990 . Categorical Data Analysis. New York, Wiley
- Armstrong , B. and Sloan , M. 1989 . “Ordinal regression models for epidemiologic data” . American Journal of Epidemiology , 129 : 191 – 204 .
- Becker , R. , Chambers , J. and Wilks , A. 1988 . The New S Language. , Pacific Grove, California : Wadsworth .
- Begg , C. and Gray , R. 1984 . “Calculation of polychotomous logistic regression parameters using individualized regressions” . Biometrika , 71 : 11 – 18 .
- Brant , R. 1990 . “Assessing proportionality in the proportional odds model for ordinal logistic regression” . Biometrics , 46 : 1171 – 1178 .
- Farewell , V. 1982 . “A note on regression analysis of ordinal data with variability of classification” . Biometrika , 69 : 533 – 538 .
- Holtbrugge , W. and Schumacher , M. 1991 . “A comparison of regression models for the analysis of ordered categorical data” . Applied Statistics , 40(2) : 249 – 259 .
- Lave , J. , Fine , M. , Sankey , S. , Hanusa , B. , Weissfeld , L. and Kapoor , W. 1996 . “Hospitalized pneumonia: outcomes, treatment patterns, and costs in urban and rural areas” . Journal of General Internal Medicine , 11 : 415 – 421 .
- Mc Cullagh , P. 1980 . “Regression models for ordinal data” . In Journal of the Royal Statistical Society Vol. 42 , 109 – 142 .