Changes of geographic allocation disparity in states with four DSAs between 1987–2009. Florida (FL) adopted Statewide Sharing variance in 1991. California (CA), New York (NY), and Ohio (OH) have not implemented Statewide Sharing variance. Geographic disparity is measured for four disparity indicators (transplant rate, waiting time, dialysis time, and 5-year graft survival) using an allocation disparity ratio. Geographic disparity improves as the allocation disparity ratio nears 1.0. A disparity ratio of 1.0 suggests that there is no geographic disparity between DSAs within a state.