___

• Altshuler, B., “Theory for the measurement of in competing Mathematical Biosciences, 6: 1-11, (1970). animal experiments”,
• Andersen, P.K., Borgan, Gill, R.D., Keiding, N., “Linear nonparametric tests for comparison of counting process with application to censored data”, International Statistical Review, 50:219-258, (1982).
• Arjas, E., “A graphical method for assessing goodness of fit in Cox’s proportional hazards model”, Journal of the American Statistical Association, 83:204-212, (1988).
• Ata, N., “Survival Models for Nonproportional Hazards”, Unpublished Doctoral Thesis, Hacettepe University, Institute of Science, Ankara, (2010).
• Breslow, N.E., “Covariance analysis of censored survival data”, Biometrics, 30, 89-99, (1974).
• Collett, D., “Modelling Survival Data in Medical Research”, Chapman and Hall, New York, (2003).
• Cox, D.R., “Regression models and life-tables”, Journal of the Royal Statistical Society Series B, 34, 187-220, (1972).
• Erdoğan, A., “Proportional Hazards Model”, Unpublished Master of Science Thesis, Hacettepe University, Institute of Science, Ankara, (1993).
• Gehan, E.A., “A generalized Wilcoxon test for comparing arbitrarily singly-censored samples”, Biometrika, 52: 203-223, (1965).
• Gill, R.D., Schumacher, M., “A simple test for the proportional hazards assumption”, Biometrika, 74: 289-300, (1987).
• Harris E.K., Albert A., Survivorship analysis for clinical studies, Marcel Dekker, New York. (1991).
• Kaplan, E.L., Meier, P., “Nonparametric estimation from incomplete observations”, Journal of the American Statistical Association, 53: 457-481, (1958).
• Leton, E., Zuluaga, P., “Equivalence between score and Communications in Statistics-Theory and Methods, 30(4): 591-608, (2001). survival curves”,
• Moreau, T., Maccario, J., Lellouch, J., Huber, C., “Weighted log rank statistics for comparing two distributions”, Biometrika, 79: 195-198, (1992).
• Perperoglou, A., Keramopoullos, A., Houwelingen, H.C., “Approaches in modelling long-term survival: An application to breast cancer”, Statistics in Medicine, 26(13): 2666-2685, (2007).
• Persson, I., “Essays on the assumption of proportional http://www.diva-portal.org, (2002). in Cox regression”,
• Persson, I, Khamis H., “Bias of the Cox model hazard ratio”, Journal of Modern Applied Statistical Methods, 4(1): 90-99, (2005).
• Prentice, R.L., “Linear rank tests with right censored data”, Biometrika, 65: 167-179, (1978).
• Prentice, R.L., Marek, P., “A qualitative discrepancy between censored data rank tests”, Biometrics, 35: 861-867, (1979).
• Schemper, M., “Cox analysis of survival data with hazards nonproportional Statistician, 41: 455-465, (1992). functions”, The
• Schemper, M., Wakounig, S., Heinze, G., “The estimation of average hazard ratios by weighted Cox regression”, Statistics in Medicine, 28: 2473-2489, (2009).
• Schoenfeld, D., “Partial proportional hazards model”, Biometrika, 69: 551- 555, (1982). residuals for the
• Therneau, T.M., Grambsch, P.M., “Modelling Survival Data: Extending the Cox model”, Springer- Verlang, New York, (2000).