Michael P. Fay
Mathematical Statistician
Interests
Measures of Agreement, Interval Censored Data, Permutation Tests, Malaria Vaccine Development
Additional Information
Curriculum Vitae (PDF)
Selected Publications
All Publications
Posters
Recent Work
Software Written by Michael Fay
Software Developed with Collaborators
Selected Publications
Fay, MP, Halloran, ME, Follmann, DA. (2007). Accounting for Variability in Sample Size Estimation with Applications to Nonadherence and Estimation of Variance and Effect Size. Biometrics, 63: 465-474.
Fay MP, Lee, J-H. (2006). Measuring Agreement Between Two Statistics with Applications to Age-Standardization. Journal of the Royal Statistical Society, Series A, 2006, 169: 81-96.
Fay, MP, Tiwari, RC., Feuer, EJ. Zou, Z. (2006). Estimating Average Annual Percent Change for Disease Rates without Assuming Constant Change. Biometrics 62:847-854.
Fay, M.P. (2005). Random Marginal Agreement Coefficients: Rethinking the Adjustment for Chance when Measuring Agreement. Biostatistics 6, 171-180.
Fay, M.P., Pfeiffer, R., et al (2003). Age Conditional Probabilities of Developing Cancer. Statistics in Medicine 22, 1837-1848.
Fay, MP, Follmann, DA. (2002). Designing Monte Carlo Implementations of Permutation or Bootstrap Hypothesis Tests. American Statistician, 56 (1), 63-70.
Fay, M.P. and Graubard, B.I. (2001). Small-Sample Adjustments for Wald-type Tests Using Sandwich Estimators. Biometrics 57, 1198-1206.
Kim, H-J., Fay, M.P., et al (2000). Permutation Tests for Joinpoint Regression with Applications to Cancer Rates. Statist Med 19, 335-351 (Correction: 20: 655, 2001).
Fay, MP. (1999). Comparing Several Score Tests for Interval Censored Data. Statistics in Medicine, 18, 273-285 (Correction: 18, 2681, 1999).
Fay, MP. (1999). Approximate Confidence Intervals for Rate Ratios from Directly Standardized Rates with Sparse Data. Communications in Statistics, Theory and Methods, 28, 2141-2160.
Fay, MP, Shih, JH. (1998). Permutation Tests using Estimated Distribution Functions. Journal of the American Statistical Association, 93, 387-396.
Fay, MP, Feuer, EJ. (1997). Confidence Intervals for Directly Standardized Rates: A Method Based on the Gamma Distribution. Statistics in Medicine 16, 791-801.
Fay, MP. (1996). Rank Invariant Tests for Interval Censored Data under the Grouped Continuous Model. Biometrics, 52, 811-822.
All Michael P. Fay Publications
Posters
Fay, M.P., Halloran, M.E., Follmann, D.A., Diemert, D., Dicko, A., Thera, M., Sagara, I., Klion, A., Doumbo, O., Saul, A. (2005). The Design of a Phase 2 Malaria Vaccine Trial Based on a Cohort Study. (PDF) Poster presented at 4th MIM Pan-African Malaria Conference.
Fay, M.P., Huang, C-Y., Twum-Danso, N.A.Y. (2007). Monitoring Rare Serious Adverse Events from a New Treatment and Testing for Difference from a Baseline Rate. (PDF) Poster presented at 2007 EMR-IBS conference, Eilat, Israel.
Recent Work
Follmann, DA, Fay, MP, Proschan, MA (2007). Chop-lump Tests for Vaccine Trials (PDF) (unpublished manuscript).
Fay, MP, Kim, H-J, and Hachey, M. (2007). On using Truncated Sequential Probability Ratio Test Boundaries for Monte Carlo Implementation of Hypothesis Tests. (PDF) (to appear in Journal of Computational and Graphical Statistics).
Software Written by Michael Fay
hbim R package to perform calculations related to the Hill/Bliss independence model as applied to mulitcomponent vaccines as described in Saul and Fay (2007).
Note this package is the exactly the same as the one on the PLoS ONE site, except the reference has been updated, and the date on the vignette (calculation details document) was changed when it was rebuilt.
choplump R package to perform permutation tests when there are a high proportion of zeros for responses as described in Follmann, Fay, and Proschan (2007) (PDF).
Interval Censored Data Functions (S-PLUS functions)
Small Sample Adjustments for Wald-type Tests using Sandwich Estimators (S-Plus functions)
MChtest R package to perform Monte Carlo hypothesis testing with sequential stopping as described in Fay, Kim and Hachey (2007)
ssanv R package to calculate sample sizes that account for variability as described in Fay, Halloran, Follmann. (2007)
Software Developed with Collaborators
Conditional Logistic Regression with Sandwich Estimators (PC executable files with Fortran code)
Joinpoint Regression (PC executable with GUI)
Probability of Developing or Dying of Cancer (PC executable with GUI)
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