I will point to some good work done by Tufts University and a number of other organizations, and Julie referred to the inter-agency standing committee work on gender equality in humanitarian action.
One of the reasons all three of us are now going to mention collecting sex and age disaggregated data is that one of the best ways to make progress so that people are counted in—elderly, children, and women; all three—is to make sure that when we're doing data collection, and even at the beginning of a project or at the beginning of considering a response, we're asking the questions seriously: How many men? How many women? How many boys? How many girls?
Some of my colleagues in the organizations where I'm training get tired of my asking these questions over and over again. I ask them because that's where the improvement lies, in being able to intentionally count women or the elderly in. A number of agencies under the UN are leading the charge on trying to make sure this happens.