Multivariate association between demographic, clinical and operative factors and surgical site infections and death.

SSI = surgical-site infection.*ORs for pre-operative glucose levels estimated from model restricted to those with pre-operative glucose levels available.**ORs for post-operative glucose levels estimated from model restricted to those with post-operative glucose levels available.***ORs for hemoglobin A1c levels estimated from model restricted to those with hemoglobin A1c levels available.