Survival Inequity in Vulnerable Populations with Early-Stage Hepatocellular Carcinoma: A United States Safety-Net Collaborative Analysis
BACKGROUND: Access to health insurance and curative interventions [surgery/liver directed therapy (LDT)] affects survival for early-stage hepatocellular carcinoma (HCC). The aim of this multi-institutional study of high-volume safety-net hospitals (SNHs) and their tertiary-academic-centers (AC) was to identify the impact of type/lack of insurance on survival disparities across hospitals, particularly SNHs whose mission is to minimize insurance related access to care barriers for vulnerable populations. METHODS: Early-stage HCC patients (2012-2014) from the US Safety-Net Collaborative were propensity-score matched by treatment at SNH/AC. Overall survival (OS) was the primary outcome. Multivariable Cox proportional-hazard analysis was performed accounting for sociodemographic and clinical parameters. RESULTS: Among 925 patients, those with no insurance (NI) had decreased curative surgery, compared to those with government insurance (GI) and private insurance [PI, (PI-SNH:60.5% vs. GI-SNH:33.1% vs. NI-SNH:13.6%, p<0.001], and decreased median OS (PI-SNH:32.1 vs. GI-SNH:22.8 vs. NI-SNH:9.4 months, p=0.002). On multivariable regression controlling for sociodemographic/clinical parameters, NI-SNH (HR:2.5, 95% CI:1.3-4.9, p=0.007) was the only insurance type/hospital system combination with significantly worse OS. DISCUSSION: NI-SNH patients received less curative treatment than other insurance/hospitals types suggesting that treatment barriers, beyond access to care, need to be identified and addressed to achieve survival equity in early-stage HCC for vulnerable populations (NI-SNH).