The Odds of Stage IV Melanoma Diagnoses Based on Socioeconomic Factors.

BACKGROUND

When diagnosed at stage 0-I, melanoma has a 5-year survival rate of 92% to 100% in comparison with stage IV, which has a 5-year survival rate of 15% to 20%.

OBJECTIVE

The objective of this article is to identify what socioeconomic and demographic factors were associated with increased odds in receiving a delayed melanoma diagnosis.

METHODS

This study analyzed the odds of 108,628 patients from the National Cancer Database who were diagnosed between 2004 and 2012 with American Joint Committee on Cancer stage 0-I and stage IV based on race, sex, insurance type, income, facility type, and education.

RESULTS

We identified significantly (P < .05) increased odds of stage IV primary melanoma diagnosis in those who had nonprivate insurance, including Medicare (odds ratio [OR] = 1.31, 95% confidence interval [CI]: 1.19-1.45), other government insurance (OR = 2.19, 95% CI: 1.61-2.98), Medicaid (OR = 6.97, 95% CI: 5.98-8.13), or no insurance (OR = 5.10, 95% CI: 4.41-5.91). Increased odds of late-stage melanoma were also associated with male sex (OR = 1.46, 95% CI: 1.36-1.57), race and ethnicity other than non-Hispanic white such as Hispanic whites (OR = 1.49, 95% CI: 1.15-1.92) or African Americans (OR=4.81, 95% CI: 3.75-6.18), and who had decreased education (OR = 1.19, 95% CI: 1.09-1.30). There was not a significant increase in odds of late-stage melanoma in patients from areas with the lowest levels of income compared with areas of highest income.

CONCLUSIONS

Certain socioeconomic and demographic factors are associated with odds of a later-stage melanoma diagnosis.