Study-level reported incidence of surgical site infection, stratified by surgery type.

<p>Study-level reported incidence of surgical site infection, stratified by surgery type.</p

Estimated study-specific odds ratios associated with ASA, Charlson, and NNIS risk scores in (a) unadjusted analyses and (b) adjusted analyses.

<p>Estimated study-specific odds ratios associated with ASA, Charlson, and NNIS risk scores in (a) unadjusted analyses and (b) adjusted analyses.</p

Flow diagram depicting articles excluded from the review, including stage of, and reason for, exclusion in systematic review of risk factors for surgical site infection.

<p>Flow diagram depicting articles excluded from the review, including stage of, and reason for, exclusion in systematic review of risk factors for surgical site infection.</p