Table 2

Set of independent factors associated with filter clotting determined by multivariable analysis

Factor

Odds ratio

95% CI

p

Antithrombin supplementation

0.21

0.06–0.74

0.0147

Femoral angioaccess

4.32

1.32–14.15

0.0156

SAPS II

1.06

1.01–1.12

0.0150

Backward deletion logistic regression analysis. Age, fibrinogen, heparin dose and platelets as continuous variables and the need for mechanical ventilation as a categorical variable were introduced into the model, then removed from the equation as described in Materials and methods. An odds ratio of less than 1 means a decreased risk of filter clotting. CI, confidence interval; SAPS II, Simplified Acute Physiology Score II.

du Cheyron et al. Critical Care 2006 10:R45   doi:10.1186/cc4853