Table 3.

Effect of the platelet count of the concentrate and the preparation method on 1-hour posttransfusion platelet count increments

Platelet	Observed mean dose × 10-11	Estimated 1-hour platelet increment × 109/L for observed mean dose*	Hypothetical equal dose × 10-11	Estimated 1-hour platelet increment × 109/L for hypothetical equal dose*
Control PCs	4.52	29.2/19.9	4.52	29.2/19.9
UVB-PCs	4.39	24.5/23.7	4.52	25.0/24.3
F-PCs	3.70	24.6/15.3	4.52	28.9/19.6
F-APs	3.68	27.9/18.6	4.52	34.0/24.7

^*Estimates are given for patients who were either negative or positive for lymphocytotoxic antibodies at the time of transfusion