Background: Cancer is a major global health burden, and lung cancer stands out due to its severe lethality. To enhance efforts to improve cancer care, this study analyzes the relationship between regional disparities and survival among patients with non-small cell lung cancer (NSCLC) in Lower Saxony, Germany, and discusses the findings in the context of worldwide evidence.
Methods: Patient data from the Clinical Cancer Registry of Lower Saxony were used to perform a small-scale survival analysis at the municipality level. Diagnoses from 2019 to 2022 were included, resulting in a cohort of 11,692 patients. These data were supplemented with publicly available datasets on regional residential types and socioeconomic deprivation. Survival outcomes were analyzed using Kaplan-Meier curves and Cox proportional hazards regression models.
Results: The overall median survival for the entire cohort was 334 days (95 % CI: 322-346 days). For patients residing in very central areas, the median survival was 353 days (95 % CI: 331-392 days), while for those living in very peripheral areas, it was 275 days (95 % CI: 242-333 days). Stratified by socioeconomic deprivation, the findings on median survival were ambiguous. Cox regression models show a significant higher hazard ratio for patients living peripheral (HR = 1.06, 95 % CI: 0.99-1.13) and very peripheral (HR = 1.20, 95 % CI: 1.06-1.36). Regarding socioeconomic deprivation, the findings on hazard ratios were ambiguous, too.
Conclusions: Results show disadvantages in survival for NSCLC patients living in peripheral areas of Lower Saxony. The effect of socioeconomic deprivation on survival remains challenging. Policymakers should carefully consider regional disparities when designing interventions for cancer care.
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