When transfusion dose is taken into account, the probability of survival of patients transfused at the New York University Medical Center in 1988 to 1996 and identified by lookback is similar to that reported for Swedish county residents transfused in 1993. Based on both the Swedish data and the information presented here and in the absence of any recent results from population-based studies, the survival of U.S. patients transfused in the 1990s appears to be 20 percent lower than that of Olmsted County residents transfused in 1981.
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