Multivariate regression analysis: short-term outcomes
Stepwise multivariate regression models were constructed to assess the
effects of covariates on the main outcomes of interest, namely
mortality, length of stay, re-operation and composite measure of
complications (Table 4).
Importantly, the use of PAR over CVG did not increase the risk of
operative death, re-operation, composite complications or length of
hospital stay.
The only co-variate found to be a predictor of short-term complications
was the Euroscore (odd ratio, OR 0.91, 95% CI 0.84–0.99, p=0.033).