Howard Cabral is Professor of Biostatistics and Co-Director of the Biostatistics Graduate Program and the Biostatistics Consulting Group. He has extensive experience in the analysis of longitudinal health data, especially those collected in urban areas with ethnic diversity. His methodological interests are in the analysis of longitudinal data, the effects of missing data on statistical estimation, and statistical computing. Dr. Cabral’s collaborative research examines the neurobiological changes in the brain among aging animals as well as those resulting from stroke, dementia, and Parkinson’s disease among participants in the Framingham Study, the effects of prenatal cocaine exposure on the child development, a model to decrease homelessness among those dually diagnosed with mental illness and substance abuse disorder, methods of community outreach to those infected with HIV, and interventions to enhance the health and quality of life of retirees. He is also a statistical consultant to the department of public health in Cambridge.