Trends and Economic Implications of Disparities in Postoperative Pneumonia.

Background: Postoperative pneumonia is the third most common surgical complication and can seriously impair surgical rehabilitation and lead to related morbidity and mortality. We evaluated the temporal trends in racial and ethnic disparities in postoperative pneumonia and quantified the economic burden resulting from these inequalities in the United States.

Methods: This population-based study includes 195 028 children (weighted to 964 679) admitted for elective surgery across 5340 US hospitals reporting to the Nationwide Inpatient Sample between 2010 and 2018. We estimated the risk-adjusted incidence of postoperative pneumonia, comparing racial and ethnic groups. We also quantified the inflation-adjusted hospital costs attributable to racial and ethnic disparities in postoperative pneumonia.

Results: The risk-adjusted rates of pneumonia declined across all racial and ethnic categories, with Black children having the lowest annual rate of decline (Black: 0.03 percentage points, Hispanic: 0.05 percentage points, white: 0.05 percentage points). The risk-adjusted rates of pneumonia trended consistently higher for Black and Hispanic children, relative to white children, throughout the study period (Black versus white: relative risk, 1.31 (95% confidence interval, 1.14-1.51), P < .01; Hispanic versus white: relative risk, 1.16 (95% confidence interval, 1.02-1.32), P = .02). These disparities did not narrow significantly over time. During the study period, the excess hospitalization cost attributable to racial and ethnic disparities in postoperative pneumonia was $24 533 458 for Black children and $26 200 783 for Hispanic children (total, $50 734 241).

Conclusions: Against the backdrop of decreasing postoperative pneumonia, Black and Hispanic children continue to experience higher rates compared with white children. These persistent disparities in postoperative pneumonia were associated with considerable excess cost of surgical care.