Association of insurance status and ethnicity with cancer stage at diagnosis for 12 cancer sites: a retrospective analysis

Michael T Halpern ¹, Elizabeth M Ward , Alexandre L Pavluck

⁰Epidemiology and Surveillance Research, American Cancer Society, Atlanta, GA 30303-1002, USA. michael.halpern@cancer.org

The Lancet. Oncology +

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February 20, 2008

View abstract on PubMed

Summary

Uninsured and Medicaid patients, along with ethnic minorities, face higher risks of advanced-stage cancer diagnosis in the US. Adequate insurance is vital for timely cancer screening and care.

Area Of Science

Oncology
Health Services Research
Public Health

Background

Lack of private medical insurance in the USA is linked to reduced access to care and cancer screening.
Previous regional studies indicated higher rates of advanced cancer at diagnosis among uninsured and Medicaid-insured individuals, but national data were lacking.
Ethnic minority patients often have less insurance coverage and may face disparities in cancer diagnosis stage.

Purpose Of The Study

To assess the association between insurance status and ethnicity with cancer stage at diagnosis using national-level data.
To determine if uninsured and minority patients are more likely to be diagnosed with advanced-stage cancers compared to privately insured and White patients.
To analyze these associations across 12 common cancer types in the US.

Main Methods

Utilized the US National Cancer Database (1998-2004) including over 3.7 million cancer patients.
Estimated odds ratios and 95% confidence intervals for insurance status (Medicaid, Medicare, private, uninsured) and ethnicity (White, Hispanic, Black, other) effects on cancer stage.
Controlled for patient characteristics to isolate the impact of insurance and ethnicity.

Main Results

Uninsured and Medicaid-insured patients had significantly higher odds of advanced-stage cancer diagnosis compared to privately insured patients.
This disparity was most pronounced for screenable cancers like breast, colorectal, lung, and melanoma.
Black and Hispanic patients showed increased risk of advanced-stage diagnosis regardless of insurance status compared to White patients.

Conclusions

Uninsured, Medicaid-insured, and ethnic minority patients face substantially increased risks of advanced-stage cancer at diagnosis.
Adequate health insurance is a critical determinant for accessing appropriate cancer screening and timely medical care.
Addressing insurance disparities is essential for improving cancer outcomes across diverse populations.

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