Table 4.

Linear mixed analysis of transfusion efficacy of APCs irradiated at the day of transfusion and in advance (≥24 h)

Gamma-irradiated APCs	n	Mean PPR1h		PPR1h univariate			PPR1h multivariate
		%	SD	difference, %	95% CI, %	p	difference, %	95% CI, %	p
Day of transfusion	365	35.0%	18.5			reference			reference
≥24 h	174	27.7%	18.0	−4.2	−7.2 to −1.2	0.007	−3.0	−5.7 to −0.3	0.030