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One study seeks to understand the underlying causes of racial and ethnic disparities in cancer survival. The results may be surprising.
The underlying causes of racial and ethnic disparities in cancer survival must be understood to ensure that patient have the greatest chances to live, according to a recent study.
In the study, published in the Journal of Clinical Oncology, researchers found that the largest contributors to racial and ethnic disparities in cancer survival were stage at diagnosis, neighborhood socioeconomic status and marital status.
Lead researcher Elizabeth Ellis, PhD, staff scientist at the Cancer Prevention Institute of California, and colleagues, examined cancer survival by racial/ethnic group for 877,662 patients diagnosed with breast, prostate, colorectal or lung cancer between 2000 and 2013 using California Cancer Registry data. They used mediation analysis as a novel approach to quantify the contribution of patient and tumor characteristics to racial/ethnic survival disparities.
Other findings include:
“The strong influence of socioeconomic status and marital status suggest that social determinants, support mechanisms, and access to healthcare need to be addressed to ensure that all patients have the opportunity to experience optimal survival,” says Ellis. “Interestingly, we found that health insurance status was not a significant contributor of racial and ethnic survival disparities after controlling for stage at diagnosis and socioeconomic status, despite evidence that black-white survival disparities differ by type of health insurance.”
“Strategies to improve access to preventative care and cancer screening, especially among black and Hispanic populations, could make an important contribution to reducing cancer survival disparities,” Ellis says. “The assessment of social determinants, support mechanisms, and barriers to care may also be of particular relevance to patients in a managed care setting.”
In all clinical settings, ensuring that these social determinants are assessed, and that barriers to care for vulnerable populations are addressed, may go a long way toward the reduction of cancer survival disparities, Ellis says.