Technical brief on what is and how to conduct a secondary data review (SDR).

A Secondary Data Review (SDR) is a rigorous process of data collation, synthesis and analysis building on a desk study of all relevant information available from different sources such as the government, NGOs, UN agencies, media, social media, etc. An SDR builds on the logic that the severity of the crisis, the type, scope, scale of problems, and risks faced by the affected population can be estimated or projected with reasonable degree of accuracy by following a systematic and multi-disciplinary approach.