Masako Nishikawa, PhD.
Chief, Statistical Modeling Section, Department of Technology Assessment and Biostatistics, National Institute of Public Health.


Research Interests:

  • Statistical Methods for Medical Research, Clinical Trials - Design and Statistical Analysis, Data analysis, Pharmacokinetics.


    Selected Publications:

  • Nishikawa M, Tango T. Ohtaki M. Statistical tests based on new composite hypotheses in clinical trials reflecting the relative clinical importance of multiple endpoints quantitatively. Biometrical Journal 2009G51:749-762.

  • Nishikawa M. Competing risks model in the analysis of survival data. Japanese Journal of Biometrics 2008; 29:141-170.

  • Nishikawa, M., Tango, T., Ogawa, M. Non-parametric inference of adverse events under informative censoring. Statistics in Medicine 2006;25,3981-4003.

  • Nishikawa M, Tango T. Letter to the editor - Testing treatment effects in the presence of competing risks. Statistics in Medicine 2006; 25: 3758-3760.

  • Nishikawa, M. and Tango, T. Counter-intuitive Properties of the Kaplan-Meier Estimator. Statistics and Probability Letter 2003; 65:353-361.

  • Nishikawa, M. and Tango, T. Behavior of the Kaplan-Meier estimator for deterministic imputations to interval-censored data and the Turnbull estimator. Japanese Journal of Biometrics 2003; 24(2):71-94.

  • Nishikawa, M. Recent trend in Medical statistics. Medical Care and Computer 2001; 12: 8-16 (in Japanese).

  • Urae, A., Okada, M. Kimura, R., Matsukuma, K., Furuya, H., Tsukikawa, H., Nitta, Y., Nishikawa, M., and Irie, S. A clinical pharmacology study of drug interaction of fexofenadine and erythromycin in healthy male volunteers |Influence of concomitant use of fexofenadine and erythromycin on Pharmacokinetics and cardiogram. Clinical Pharmacology and Therapeutics 2000; 31(5): 639-648 (in Japanese).

  • Urae, A., Okada, M. Irie, S. Tanaka, T., Kadonami, Y., Habu, S., Matsukuma, K., Furuya, H., Tsukikawa, H., Nitta, Y., Nishikawa, M., and Nakano, S. Influence of fexofenadine on impaired performance in healthy volunteers - Based on performance of input to word processor. Clinical Pharmacology and Therapeutics 2000; 31(5): 649-658 (in Japanese).