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- Some drop-the-loser designs for monitoring multiple doses. Statistics in Medicine 2010. 29:1793-1807 .
- Traning of the next generation of biostatisticians: A call to action in the U. S.. Statistics in Medicine 2006. 25:3415-3429 .
- Discussion on "statistical issues arising in the women's health initiative". Biometrics 2005. 61:912-914 .
- Design and analysis of group sequential clinical trials with multiple primary endpoints. Biometrics 2004. 60:134-145 .
- Conditional bias of point estimates following a group sequential test. Journal of Biopharmaceutical Statistics 2004. 14:505-530 .
- Increasing the sample size when the unblinded interim result is promising. Statistics in Medicine 2004. 23:1023-1038 .
- The independent statistician for data monitoring committees. Statistics in Medicine 2004. 23:1513-1517 .
- Clinical trials in the new millennium. Statistics in Medicine 2002. 21:2779-2787 .
- Monitoring clinical trials: Issues and controversies regarding confidentiality. Statistics in Medicine 2002. 21:2843-2851 .
- An overview of group sequential methods in longitudinal clinical trials. Statistical Methods in Medical Research 2000. 9:497-515 .
- Where the jobs are: A study of Amstat News job advertisements (Pkg: p289-314; Disc: 1999V53 p173-174). The American Statistician 1998. 52:303-307 .
- Estimating and reducing bias in group sequential designs with Gaussian independent increment structure. Biometrika 1997. 84:831-845 .
- Distinctions between fraud, bias, errors, misunderstanding, and incompetence. Controlled Clinical Trials 1997. 18:637-650 .
- Sequential monitoring of clinical trials with correlated responses. Biometrika 1996. 83:157-167 .
- Exact permutation inference for two sample repeated measures data. Communications in Statistics: Theory and Methods 1996. 25:2223-2238 .
- A comparison of methods for correlated ordinal measures with ophthalmic applications. Statistics in Medicine 1995. 14:1961-1974 .
- Group sequential comparison of changes: Ad-hoc versus more exact method. Biometrics 1995. 51:21-30 .
- Interim analysis: The alpha spending function approach (Disc: p1353-1356). Statistics in Medicine 1994. 13:1341-1352 .
- Training the next generation of biostatisticians. The American Statistician 1994. 48:280-284 .
- Information and information fractions for design and sequential monitoring of clinical trials. Communications in Statistics: Theory and Methods 1994. 23:403-420 .
- Monitoring of clinical trials: Issues and recommendations. Controlled Clinical Trials 1993. 14:183-197 .
- Sample size determination for group sequential clinical trials with immediate response. Statistics in Medicine 1992. 11:1391-1399 .
- [Evaluating Therapeutic Interventions: Some Issues and Experiences]: Comment. Statistical Science 1992. 7:443-444 .
- Comment on ``Evaluating therapeutic interventions: Some issues and experiences''. Statistical Science 1992. 7:443-444 .
- Sequential rank tests with repeated measurements in clinical trials. Journal of the American Statistical Association 1992. 87:136-142 .
- Sequential comparison of changes with repeated measurements data. Journal of the American Statistical Association 1991. 86:757-762 .
- Early methodological developments for clinical trials at the National Heart, Lung and Blood Institute. Statistics in Medicine 1990. 9:881-892 .
- Changing frequency of interim analysis in sequential monitoring. Biometrics 1989. 45:1017-1020 .
- Group sequential procedures: Calendar versus information time. Statistics in Medicine 1989. 8:1191-1198 .
- Use of logrank tests and group sequential methods at fixed calendar times. Biometrics 1985. 41:1039-1044 .
- Stopping guidelines vs. stopping rules: A practitioner's point of view. Communications in Statistics: Theory and Methods 1984. 13:2395-2417 .
- More flexible sequential and non-sequential designs in long-term clinical trials. Communications in Statistics: Theory and Methods 1984. 13:2339-2353 .
- An overview of sequential methods and their application in clinical trials. Communications in Statistics: Theory and Methods 1984. 13:2315-2338 .
- Discrete sequential boundaries for clinical trials. Biometrika 1983. 70:659-663 .
- An aid to data monitoring in long-term clinical trials. Controlled Clinical Trials 1982. 3:311-323 .
- Asymmetric group sequential boundaries for monitoring clinical trials. Biometrika 1982. 69:661-663 .
- Simulation studies on increments of the two-sample logrank score test for survival time data, with application to group sequential boundaries. Institute of Mathematical Statistics Lecture Notes - Monograph Series 1982. 1982:287-301 .
- Early stopping in the two-sample problem for bounded random variables. Controlled Clinical Trials 1982. 3:1-11 .