Stevens Bechange is a Senior Research Advisor, Africa & South Asia at Sightsavers. Dr Bechange is a behavioral epidemiologist with over 16 years of technical and managerial experience in public health and social science research with a focus on health care evaluation of effectiveness and equity, marginalization and system analysis using both quantitative and mixed methods approaches. Over the past eight years he has led and co-led several research projects in Uganda, Kenya, Malawi, Zambia, Mozambique, Tanzania, Sierra Leone, Cameroon, Senegal, Mali and Pakistan funded by a range of funding bodies.