Methodology Research Publications

Chen, H. Y. and Li, M. (2011). Improving power for detecting genetic association in extreme value sampling design. Accepted by Genetic Epidemiology.

Chen, H. Y. and Chen J. (2011). On information coded in gene-environment independence in case-control design.  American Journal of Epidemiology, In press.

Chen, H. Y., Xie, H., and Qian, Y. (2011). Multiple imputation for missing values through conditional semiparametric odds ratio models.  Biometrics. In press.

Chen, H. Y. (2011). A unified framework for parameter identification and estimation in biased sampling design.  Biometrika 98, 163-175.

Chen, H. Y. (2010). On L^infty convergence of Neumann series approximation in missing data problems. Probability & Statistics Letters, 80, 864-873.

Chen, H. Y. (2010). Compatibility of conditionally specified distributions. Probability & Statistics Letters, 80, 670-677.

Chen, H. Y. (2011). Representations of efficient score for coarse data problem based on Neumann series expansion. The Annals of the Institute of Statistical Mathematics, 63, 497-509.

Chen, H. Y. (2009). Estimation and inference based on Neumann series approximation to locally efficient score in missing data problems.  The Scandinavian Journal of Statistics, 36, 713-734. Supplementary material.

Chen, H. Y. and Gao, S. (2009). Estimation of average treatment effect with incompletely observed longitudinal data: application to a smoking cessation study.  Statistics in Medicine,  28, 2451-2472.

Chen, H. Y. (2007). A semiparametric odds ratio model for measuring association. Biometrics, 63, 413-421.

See SAID package for software to perform the proposed analysis.

Chen, H. Y. (2004). Nonparametric and Semiparametric models for missing covariates in parametric regression. Journal of the American Statistical Association, 99, 1176-1189.

See SAID package for software to perform the proposed analysis

Chen, H. Y. (2003). A note on the prospective analysis of outcome-dependent samples. The Journal of Royal Statistical Society, Series B 575-584.

Chen, H. Y. (2002). Double nonparametric likelihood method for the Cox regression model with missing covariates. The Journal of American Statistical Association 97, 565-576.

Chen, H. Y. (2001). Weighted likelihood methods for fitting proportional odds regression model to case-cohort designs. The Journal of American Statistical Association 96, 1446-1457.

Chen, H. Y. and Little,R.J.A. (2001). A profile conditional likelihood approach for semiparametric transformation model with missing covariates. Lifetime Data Analysis 7, 207-224.

Chen, H. Y. (2001). Analysis of data from the modified case-cohort design by semiparametric transformation regression models. Biometrika 88, 255-268.

Wang, C. Y. and Chen, H. Y. (2001). Augmented inverse probability weighted estimator for Cox missing covariate regression. Biometrics 57, 414-419.

Chen, H. Y. and Little, R.J.A (1999). A test of missing completely at random for generalized estimating equations with missing data. Biometrika, 86, 1-13.

Chen,H. Y. and Little, R.J.A. (1999). Proportional hazards regression with missing covariate. The Journal of American Statistical Association, 94, 896-908.