Explaining Racial Disparities in Surgically Treated Head and Neck Cancer

To assess the causative factors that contribute to racial disparities in head and neck squamous cell carcinoma (HNSCC) and establish the role of hospital factors in racial disparities.

Retrospective database analysis.

Patients with surgically treated HNSCC were identified using the National Cancer Database (2004-2014). Logistic and proportional-hazard regression models were used to characterize the factors that contribute to racial disparities. Differences in quality of care received were compared among black and white patients using previously validated metrics.

We identified 69,186 eligible patients. Black patients had a 48% higher mortality than white patients (HR 1.48; 95% confidence interval [CI], 1.41-1.54). Black patients had a lower mean quality score (67.6%; 95% CI, 66.8%-69.4%) compared with white patients (71.2%: 95% CI, 71.0%-71.4%) for five quality metrics. After adjusting for differences in patient, oncologic, and hospital factors we were able to explain 60% of the excess mortality for black patients. Oncologic factors at presentation accounted for 57.7% of observed mortality differences, whereas hospital characteristics and quality of care accounted for 11.5%. After adjusting for these factors, black patients still had a 19% higher mortality (HR 1.19; 95% CI, 1.14-1.24).

Oncologic factors at presentation are a major contributor to racial disparities in outcomes for HNSCC. Hospital factors, such as quality, volume, and safety-net status, constitute a minor factor in the mortality difference. Resolving existing disparities will require detecting head and neck cancer at an earlier stage and improving the quality of care for black patients.

3. Laryngoscope, 131:1053-1059, 2021.