RESUMO
OBJECTIVE: To evaluate potential effect modification by health insurance coverage on racial and ethnic disparities in cancer survival among US children and adolescents. STUDY DESIGN: Data from 54â558 individuals diagnosed with cancer at ≤ 19 years between 2004 and 2010 were obtained from the National Cancer Database. Cox proportional hazards regression was used for analyses. An interaction term between race/ethnicity and health insurance type was included to examine racial/ethnic disparities in survival by each insurance status category. RESULTS: Racial/ethnic minorities experienced a 14%-42% higher hazard of death compared with non-Hispanic Whites (NHWs) with magnitudes varying by health insurance type (Pinteraction < .001). Specifically, among those reported as privately insured, the hazard of death was higher for non-Hispanic Blacks (NHBs) (hazard ratio [HR] = 1.48, 95% CI: 1.36-1.62), non-Hispanic American Indian/Alaskan Natives (HR = 1.99, 95% CI: 1.36-2.90), non-Hispanic Asians or Pacific Islanders (HR = 1.30, 95% CI: 1.13-1.50), and Hispanics (HR = 1.28, 95% CI: 1.17-1.40) vs NHWs. Racial/ethnic disparities in survival among those reported as covered by Medicaid were present for NHBs (HR = 1.30, 95% CI: 1.19-1.43) but no other racial/ethnic minorities (HR ranges: 0.98â¼1.00) vs NHWs. In the uninsured group, the hazard of death for NHBs (HR = 1.68, 95% CI: 1.26-2.23) and Hispanics (HR = 1.27, 95% CI: 1.01-1.61) was higher vs NHWs. CONCLUSIONS: Disparities in survival exist across insurance types, particularly for NHB childhood and adolescent cancer patients vs NHWs with private insurance. These findings provide insights for research and policy, and point to the need for more efforts on promoting health equity while improving health insurance coverage.
Assuntos
Etnicidade , Disparidades em Assistência à Saúde , Neoplasias , Adolescente , Criança , Humanos , Hispânico ou Latino , Cobertura do Seguro , Seguro Saúde , Estados Unidos/epidemiologia , Brancos , Negro ou Afro-Americano , Indígena Americano ou Nativo do AlascaRESUMO
Organic solvents are ubiquitous in occupational settings where they may contribute to risks for carcinogenesis. However, there is limited information on organic solvents as human breast carcinogens. We examined the relationship between occupational exposure to solvents and breast cancer in a prospective study of 47,661 women with an occupational history in the Sister Study cohort. Occupational solvent exposure was categorized using self-reported job-specific solvent use collected at baseline. Multivariable Cox regression analyses were used to assess breast cancer risk, adjusting for established breast cancer risk factors. A total of 1,798 women were diagnosed with breast cancer during follow-up, including 1,255 invasive cases. Overall the risk of invasive breast cancer was not associated with lifetime exposure to solvents [HR, 1.04; 95% confidence interval (CI), 0.88-1.24]. Parous women who worked with solvents before their first full-term birth had an increased risk of estrogen receptor-positive invasive breast cancer compared with women who never worked with solvents (HR, 1.39; 95% CI, 1.03-1.86). A significantly elevated risk for estrogen receptor-positive invasive breast cancer was associated with solvent exposure among clinical laboratory technologists and technicians (HR, 2.00; 95% CI, 1.07-3.73). Occupational exposure to solvents before first birth, a critical period of breast tissue differentiation, may result in increased vulnerability for breast cancer. Our findings suggest a need for future studies in this area to focus on exposure time windows and solvent types in different occupational settings.