Allocation efficiency between DSAs within states with two and four DSAs (1987–2009). Florida (FL) and Tennessee (TN) adopted Statewide Sharing variance in 1991 and 1992, respectively. Tennessee and Florida are compared with states that entail the same number of DSAs that did not implement Statewide Sharing. Allocation efficiency is measured as the additional time required to allocate a deceased-donor kidney for transplantation within the state of procurement when local allocation is not possible. CA, California; NC, North Carolina; NY, New York; OH, Ohio; PA, Pennsylvania; WI, Wisconsin.