Helena Geys

The validation of surrogate endpoints in meta-analyses of randomized experiments

Marc Buyse, Geert Molenberghs, Tomasz Burzykowski et al. · Biostatistics · 2000 · 605 citations · Full text

Medicine, Biostatistics, Oncology +15

Validation of Surrogate end Points in Multiple Randomized Clinical Trials with Failure Time end Points

Tomasz Burzykowski, Geert Molenberghs, Marc Buyse et al. · Journal of the Royal Statistical Society Series C (Applied Statistics) · 2001 · 218 citations · Full text

Public Health, Biostatistics, Epidemiologic Methods +14

Pseudolikelihood Modeling of Multivariate Outcomes in Developmental Toxicology

Helena Geys, Geert Molenberghs, Louise Ryan · Journal of the American Statistical Association · 1999 · 114 citations

Pharmacy, Biostatistics, Toxicology +13

Applying Concepts of Generalizability Theory on Clinical Trial Data to Investigate Sources of Variation and Their Impact on Reliability

Tony Vangeneugden, Annouschka Laenen, Helena Geys et al. · Biometrics · 2005 · 105 citations

Social Sciences, Psychiatry, Psychology +15

A pairwise likelihood approach to estimation in multilevel probit models

Didier Renard, Geert Molenberghs, Helena Geys · Computational Statistics & Data Analysis · 2002 · 101 citations

Business, Economics, Econometrics +11