- BRESLOW , N. E. and CROWLEY , J. J. 1974 . A large sample study of the life-table and product limit estimates under random censorship . Annals of Statistics , 2 : 437 – 453 .
- COX , D. R. 1972 . Regression models and life tables (with discussion) . Journal of the Royal Statistical Society B , 34 : 187 – 220 .
- C0X , D. R . 1975 . Partial likelihood . Biometrika , 62 : 269 – 276 .
- GRAY , R. J. 1990 . Some diagnostic methods for Cox regression models through hazard smoothing . Biometrics , 46 : 92 – 102 .
- GRAY , R. J. 1992 . Flexible methods for analyzing survival data using splines with application to breast cancer prognosis . Journal of the American Statistical Association , 87 : 942 – 951 .
- HASTIE , T. and TIBSHIRANI , R. 1993 . Varying-coefficient models . Journal of the Royal Statistical Society B , 55 : 757 – 796 .
- KALBFLEISCH , J. and PRENTICE , R. L. 1980 . The Statistical Analysis of Failure Time Data , New York : Wiley .
- LIANG , K. Y. , SELF , S. G. and LIE , X. 1990 . The Cox proportional hazards model with change point: an epidemiological application . Biometrics , 46 : 783 – 793 .
- MARZEC , L. and MAKZEC , P. 1997 . On fitting Cox's regression model with time-dependent coefficients . Biometrika , 84 : 901 – 908 .
- MOREAU , T. , O'QUIGLEY , J. and MESBAH , M. 1985 . A global goodness of fit statistic for the proportional hazards model . Applied Statistics , 34 : 212 – 218 .
- MURPHY , S.A. and SEN , P. K. 1991 . Time-dependent coefficients in a Cox-type regression model . Stochastic Processes and their Applications , 39 : 153 – 180 .
- O'QUIGLEY , J. and FLANDRE , P. 1994 . Predictive capability of proportional hazards regression . Proceedings of aie National Academy of Sciences , 91 : 2310 – 2314 .
- O'QUIGLEY , J. and PESSIONE , F. 1989 . Score tests for homogeneity of regression effect in proportional hazards models . Biometrics , 45 : 135 – 144 .
- O'QUIGLEY , J. and PESSIONE , F. 1991 . The problem of a covariate-time qualitative interaction in a survival study . Biometrics , 47 : 101 – 115 .
- O'QUIGLEY , J. and XU , R. 1998 . Goodness of fit in survival analynis . Encylopedia of Biostatistics , : 1731 – 1743 . Wiley
- O'QUIGLEY , J. and Xu , R. 2000 . “ Explained variation in proportional haward regreation ” . In Handbook of Statistics in Clinical Oncology Edited by: CROWLEY , J.
- SAROHNT , D. J. 1997 . A flexible approach to time-varying coefficients in the Cox regression setting . Lifetime data analisis , 3 : 13 – 29 .
- SCHOENFELD , D. A. 1982 . Partial reciduals for the proportional hazards regression model . Biomatrika , 69 : 239 – 241 .
- STRUTHERS , C. A. and KALBFLEISCH , J. 1986 . Misspecified proportional hazards models . Biomatrika , 73 : 363 – 369 .
- VERWEIJ , J.A. and VAN HOUWHLINGEN , H. A. 1995 . Time-dependent effects of fixed covarites in Cox regression . Biomatrika , 51 : 1550 – 1556 .
- TSIATIS , A.A . 1975 . A nonidentiflability aspect of the problem of competing risks . Proceedings of the National Academy of Science , 72 : 20 – 22 .
- XU , R. 1996 . “ Inference for the proportional hazards model ” . San Diego PhD thesis of University of California
- XU , R. and O'QUIGLEY , J. 1998 . Estimating average log relative risk under nonproportional hazards . ASA Proceeding of the Biomatrika Section , : 216 – 221 .
- XU , R. and O'QUIGLEY , J. 1999 . A measure of dependence for proportional hazard models . Journal of Nonparametric Statistics , 12 : 83 – 107 .
- ZUCKHR , D. M. and KARR , A F. 1990 . Nonparametric survival analysis with time-dependent covariate effects: a penalized partial likelihood approach . Annals of Statistics , 18 : 329 – 353 .
Journal of Applied Statistics
Volume 29, 2002 - Issue 8