Table 2. Significant predicators of adverse events.

	Univariate analysis		Multiple logistic analysis
	RR [95%CI]	P-value	ARR [95%CI]	adj.P-value
Age (years)
<30 vs. ≥300	2.01 [1.52–2.66]	<0.001*	1.58 [1.18–2.12]	<0.002*
Weight (Kg)
<75 vs. ≥750	1.97 [1.49–2.58]	<0.001*	1.71 [1.29–2.27]	<0.001*
Donation history
First time vs. Previous0	2.50 [1.86–3.36]	<0.001*	2.21 [1.64–2.97]	<0.001*
Hemoglobin level
(g/dl)	1.28 [1.14–1.44]	<0.001*	1.30 [1.15–1.46]	<0.001*

RR: relative risk, CI: confidence interval, ARR: adjusted relative risk, adj: adjusted,

⁰: reference group, g/dl: gram per deciliter,

%: percentage,

*: significance at <0.05.