S Gao

Logistic regression models with missing covariate values for complex survey data.

S L Hui, S Gao, Sujuan Gao, 1997, Statistics in medicine.

Estimating disease prevalence from two-phase surveys with non-response at the second phase.

H C Hendrie, K. Hall, H. Hendrie, 2000, Statistics in medicine.

Estimating the incidence of dementia from two-phase sampling with non-ignorable missing data.

S. Hui, S. Gao, S L Hui, 2000, Statistics in medicine.

Methods for comparing the means of two independent log-normal samples.

X H Zhou, S. Hui, X. H. Zhou, 1997, Biometrics.

Methods for testing equality of means of health care costs in a paired design study

W M Tierney, X H Zhou, W. Tierney, 2001, Statistics in medicine.