References
- BMDP Statistical Software Inc. 1990 . BMDP Manual , Los Angeles : editor .
- Breslow , N. E. 1974 . “Covariance Analysis of Censored Survival Data” . Biometrics , 30 : 89 – 99 .
- Cox , D. R. and Oakes , D. 1984 . Analysis of Survival Data , New York : Chapman and Hall .
- Efron , B. 1977 . “The Efficiency of Cox's Likelihood Function for Censored Data” . Journal of the American Statistical Association , 72 : 27 – 36 .
- Hauck , W. W. and Donner , A. 1977 . “Wald's Test as Applied to Hypotheses in Logit Analysis” . Journal of the American Statistical Association , 72 : 851 – 853 .
- Jennings , D. E. 1986 . “Judging Inference Adequacy in Logistic Regression” . Journal of the American Statistical Association , 81 : 471 – 476 .
- Kalbfleisch , J. D. and Prentice , R. L. 1980 . The Statistical Analysis of Failure Time Data , New York : John Wiley .
- Kassalow , L. M. “Likelihood Ratio Tests for Regression Coefficients from the Cox Proportional Hazards Model Using the PHREG Procedure” . SUGI Conference . (Paper 267), May 5
- SAS Institute Inc. 1990 . SAS/STAT User's Guide, Version 6, , 4th ed. , Vol. 1 and 2 , Gary , NC : editor .
- SAS Institute Inc. 1992 . “SAS/STAT Software: Changes and Enhancements” , Gary , NC : editor . SAS Technical Report, p-229, Release 6.07