Karen Bandeen-Roche, PhD is a statistician / gerontologist who currently chairs the Department of Biostatistics at the Johns Hopkins Bloomberg School of Public Health. Her statistical specialty areas of research are in latent variable and multivariate outcome modeling. Her gerontologic research aims to better understand the causes and course of physical disability, cognitive decline, and frailty in older adults, so that their adverse implications can be delayed or avoided. She is an ASA Fellow and a Marvin Zelen Leadership in Statistical Science Award winner, and she has contributed extensive service to promote the statistical profession through leadership in scientific review panels and our professional societies.