ArticleCancer medicine2023
Socioeconomic disparities in cancer survival: Relation to stage at diagnosis, treatment, and centralization of patients to accredited hospitals, 2005-2014, Japan.
Article in Cancer medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed.
- Association between hypertension prevalence and neighborhood characteristics in Japan using combined claims data and geographic information systems: a neighborhood correlation study from LIFE Study.Environmental health and preventive medicine · 2026Article
- Review
- Association Between Area-Level Socioeconomic Disadvantage and Immunotherapy in Patients With Non-Small Cell Lung Cancer.Cancer medicine · 2025Article
- Area Socioeconomic Status, Vaccination Access, and Female Human Papillomavirus Vaccination.JAMA network open · 2025Article
- Temporal changes in regional variations in cancer survival rates in Osaka, Japan (1997-2015).Scientific reports · 2025Article
- Disparities in cancer incidence, stage at diagnosis, treatment and mortality across socioeconomic groups in Finland: a register-based population study.BMJ public health · 2025Article
- Socioeconomic Disparities in Six Common Cancer Survival Rates in South Korea: Population-Wide Retrospective Cohort Study.JMIR public health and surveillance · 2024Article
- Educational inequalities in all-cause and cause-specific mortality in Japan: national census-linked mortality data for 2010-15.International journal of epidemiology · 2024Article
- Survival Time Disparities after Palliative Care Use Among Low-Income Patients on Social Welfare Programs: A Retrospective Cohort Study.Palliative medicine reports · 2024Article
- Socioeconomic disparities in cancer survival: Relation to stage at diagnosis, treatment, and centralization of patients to accredited hospitals, 2005-2014, Japan.Cancer medicine · 2023Article
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Abstract
backgroundCancer survival varies by socioeconomic status in Japan. We examined the extent to which survival disparities are explained by factors relevant to cancer control measures (promoting early-stage detection, standardizing treatment, and centralizing patients to government-accredited cancer hospitals [ACHs]).
methodsFrom the Osaka Cancer Registry, patients diagnosed with solid malignant tumors during 2005-2014 and aged 15-84 years (N = 376,077) were classified into quartiles using the Area Deprivation Index (ADI). Trends in inequalities were assessed for potentially associated factors: early-stage detection, treatment modality, and utilization of ACH (for first contact/diagnosis/treatment). 3-year all-cause survival was computed by the ADI quartile. Multivariable Cox regression models were used to assess survival disparities and their trends through a series of adjustment for the potentially associated factors.
resultsDuring 2005-2014, the most deprived ADI quartile had lower rates than the least deprived quartile for early-stage detection (42.6% vs. 48.7%); receipt of surgery (58.1% vs. 64.1%); and utilization of ACH (83.5% vs. 88.4%). While rate differences decreased for receipt of surgery and utilization of ACH (Annual Percent Change = -3.2 and - 11.9, respectively) over time, it remained unchanged for early-stage detection. During 2012-2014, the most deprived ADI quartile had lower 3-year survival than the least deprived (59.0% vs. 69.4%) and higher mortality (Hazard Ratio [HR] = 1.32, adjusted for case-mix): this attenuated with additional adjustment for stage at diagnosis (HR = 1.23); treatment modality (HR = 1.20); and utilization of ACH (HR = 1.19)
conclusionsDespite improvements in equalizing access to quality cancer care during 2005-2014, survival disparities remained. Interventions to reduce inequalities in early-stage detection could ameliorate such gaps.
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