Association Between Neighborhood Socioeconomic Factors and Length of Stay After Surgery for Congenital Heart Disease

Abstract

Objectives: Neighborhood socioeconomic status, as measured by area deprivation index (ADI) is associated with longer length of stay (LOS) after surgery for hypoplastic left heart syndrome. We tested the hypothesis that LOS is associated with ADI in a large cohort of congenital heart disease (CHD) surgical cases of varying severity and sought to determine which other components of the ADI accounted for any associations. Design: Retrospective analysis of a curated dataset. The Brokamp ADI was determined using residential addresses. Overall, ADI and each of its six individual components were dichotomized, and LOS compared between groups above versus below the median for the entire cohort and after stratifying by surgical The Society of Thoracic Surgeons-European Association for Cardio-Thoracic Surgery (STAT) severity category. Setting: Single-center academic pediatric teaching hospital. Patients: CHD patients who underwent surgical repair/palliation between September 2007 and August 2022. Interventions: None. Measurements and Main Results: A total of 2462 patients (52.7% male) were included. Median age was 254 (interquartile range [IQR] 95–1628) days and median LOS in the hospital was 8 (IQR 5–18) days. We failed to identify an association between Brokamp ADI, above versus below the median for the entire cohort, and LOS; nor in STAT categories 1–4. However, in STAT category 5 (n = 129) those with ADI above the median (more deprived) had a significantly longer LOS (48 [20–88] vs. 36 [18–49] d, p = 0.034). Of the individual components of the ADI, only percent below poverty level and percent vacant houses were associated with LOS in STAT category 5. Conclusions: LOS after CHD surgery is associated with Brokamp ADI in STAT category 5 cases, we failed to identify an association in lower-risk cardiac operations.