10/90 gap

10/90 gap
 n.— «This disparity has been called the “10/90 gap,” a term coined after a commission in 1990 provided research showing that only approximately 10 percent of the resources spent on health research go to the problems afflicting 90 percent of the world’s population.» —“Health conference tackles ‘10/90 gap’” by Michael O’Boyle Herald (Mexico City, Mexico) Nov. 15, 2004. (source: Double-Tongued Dictionary)