Table 3.

Univariate regression analysis of bleeding risk.

	Odds ratio	95% CI	p-value
avWS	20.8	3.36–128.53	0.001
Impella duration	1.3	1.09–1.55	0.003
aPTT at onset of bleeding	1.0	0.98–1.02	0.98

Variable	Odds ratio	95% CI	p-value
avWS	14.78	2.14–101.94	0.006
Impella duration	1.07	0.89–1.28	0.44

CI confidence interval, avWS acquired von-Willebrand-Syndrome.