Dr. Ahmed is a physician, demographer and epidemiologist. His research includes reproductive epidemiology, particularly maternal mortality estimation and program evaluation for family planning and maternal and child health care. He is a principal investigator for a multi-country study in Bangladesh, Ethiopia, Niger and Nigeria. He also teaches courses on survey sampling methods and on complex survey data analysis. He is a technical advisor to the Maternal Mortality Estimation Inter-Agency Group (MMEIG) for the WHO's global estimation of maternal mortality.