The C-Y Wang Group is currently interested in research centered on measurement error, missing data, physical activity and dietary intake data, joint modeling of survival and longitudinal data, and analysis of clinical trials. Our research has been motivated by many biomedical studies (such as Women’s Health Initiatives, Radiation Exposure Research Foundation), and hence the findings of our methodology research will have general applications. Our group has been involved with many biomedical and epidemiological studies, such as diet and physical activity prevention trials (Anne McTiernan Group, Marian Neuhouser Group), general medical care research (Laura-Mae Baldwin group), and colorectal cancer screening intervention trials (Bev Green Group). In addition to clinical and observational studies, in methodological research we also have general collaborations (such as Ross Prentice Group, James Dai Group, Ying Chen Group).