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Table 3 Logistic regression parameters. The outcome of logistic regression is shown for a model where low post-cardiopulmonary bypass (CPB) Systemic Vascular Resistance Index (SVRI) is the dependent variable (secondary outcome). The covariates entered into the model were IL-18 9545 genotype, age, gender and duration of bypass.

From: Novel polymorphism of interleukin-18 associated with greater inflammation after cardiac surgery

Covariate

Relative risk

of low post-CPB SVRI

95% confidence interval

p value

IL-18 9545 (TT versus TG/GG genotype)

1.57

1.01 to 2.44

0.045

Age (per year)

1.01

0.98 to 1.03

0.480

Gender (female)

0.70

0.39 to 1.27

0.703

Duration of bypass (per hour)

1.03

0.66 to 1.62

0.889