Krämer studied medicine and philosophy in Tübingen and Berlin. After obtaining his doctorate and completing his training he turned to public health, and conducted research on infectious disease epidemiology in the United States for 4 years. In 1994 he was offered a Professorship of Population Medicine at the University of Bielefeld, and cooperated in the establishment of the first independent German-speaking faculty of public health. He is head of a postgraduate university course (DrPH), at Faculty of Health Sciences, Bielefeld University (since 2007). From 2001 till 2006 he was speaker of the Program Master of Science in Epidemiology in Germany.
with J. Fobil and J. May. 2010. Assessing the relationship between socioeconomic conditions and urban environmental quality in Accra, Ghana. International Journal of Environmental Research and Public Health 7(1): 125–145.
with M. Kretzschmar and K. Krickeberg. 2010. Modern Infectious Disease Epidemiology: Concepts, Methods, Mathematical Models, and Public Health. New York: Springer International.
with E. Dhaher, R. T. Mikolajczyk, and A. E. Maxwell. 2010. Attitudes towards wife beating among Palestinian women of reproductive age from three cities in West Bank. Journal of Interpersonal Violence 25: 518-537.
with M. H. Khan, A. Khan, and M. Mori. 2009. Prevalence and correlates of smoking among urban adult men in Bangladesh: Slum versus non-slum comparison. BMC Public Health 9:149. doi:10.1186/1471-2458-9-149.
with M. H. Khan, and O. Gruebner. 2009. Comparison of health-related outcomes between urban slums, urban affluent and rural areas in and around Dhaka Megacity, Bangladesh. Die Erde 140: 69–87.
with P. Pinheiro. 2009. Calculation of health expectancies with administrative data for North Rhine-Westphalia, a Federal State of Germany, 1999-2005. Population Health Metrics 7:4. doi:10.1186/1478-7954-7-4.
with E. Dhaher, R. T. Mikolajczyk, and A. E. Maxwell. 2008. Factors associated with lack of postnatal care among Palestinian women: A cross-sectional study of three clinics in the West Bank. BMC Pregnancy and Childbirth 8:26. doi:10.1186/1471-2393-8-26.
with M. H. Khan. 2008. Socio-economic factors explain differences in public health-related variables among women in Bangladesh: A cross-sectional study. BMC Public Health 8:254. doi:10.1186/1471-2458-8-254.
with M. K. Akmatov, M. Kretzschmar, and R. T. Mikolajczyk. 2008. Timeliness of vaccination and its effects on fraction of vaccinated population. Vaccine 26: 3805–3811.
with J. Mond, H. Stich, P. J. Hay, and BT. Baune.2007. Associations between obesity and developmental functioning in pre-school children: A population-based study. International Journal of Obesity 31: 1068–1073.