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Provision of “optimal” adult donors/CB grafts over time by recipient ancestry. The likelihood that non-Europeans received an “optimal” graft did not improve. Results by (A) year of transplantation are shown, (B) by period for all transplanted patients, and (C) for 8/8 URD recipients only. Lines displayed in (A) show linear models of best fit through the data. The P values in (B-C) were generated by chi-squared tests.
