This research documents and analyses current practices concerning the collection and use of sex and age disaggregated data (SADD) and gender and generational analyses of SADD within the humanitarian community. Academic research and humanitarian practice amply demonstrate that gender and age differentiation exist in society and that these differentiations are particularly acute in situations of crisis, but that they are often not taken into consideration in response planning. This research seeks to document illustrative examples of the impact of SADD collection and analysis (or lack therefore) on humanitarian assistance. The research aims to understand how to improve humanitarian agencies’ ability to collect and analyze information based on sex and age in all phases in order to help agencies better understand vulnerabilities, needs, and issues of access, in regard to the provision of life-saving services.