Anita Andreano1, Michael D Peake2, Samuel M Janes3, Maria Grazia Valsecchi4, Kathy Pritchard-Jones5, Jessica R Hoag6, Cary P Gross7. 1. Center of Biostatistics for Clinical Epidemiology, School of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy; Lungs for Living Research Centre, Division of Medicine, University College London, London, United Kingdom. 2. National Cancer Analysis and Registration Service, Public Health England, London, United Kingdom; University College London Hospitals Cancer Collaborative, University College London Hospitals Cancer Division, London, United Kingdom; University of Leicester, Glenfield Hospital, Leicester, United Kingdom. 3. Lungs for Living Research Centre, Division of Medicine, University College London, London, United Kingdom. 4. Center of Biostatistics for Clinical Epidemiology, School of Medicine and Surgery, University of Milan-Bicocca, Monza, Italy. 5. University College London Hospitals Cancer Collaborative, University College London Hospitals Cancer Division, London, United Kingdom; University College London, UCL Great Ormond Street Institute for Child Health, London, United Kingdom. 6. Department of Internal Medicine, Section of General Internal Medicine, Cancer Outcomes, Public Policy, and Effectiveness Research Center, Yale School of Medicine, New Haven, Connecticut. 7. Department of Internal Medicine, Section of General Internal Medicine, Cancer Outcomes, Public Policy, and Effectiveness Research Center, Yale School of Medicine, New Haven, Connecticut. Electronic address: cary.gross@yale.edu.
Abstract
INTRODUCTION: Although prior research has demonstrated lower lung cancer survival in England than in the United States, more detailed comparisons are needed. We conducted a population-based analysis to compare diagnostic, treatment, and survival patterns. METHODS: Data from cancer registries and administrative databases were linked for older patients with a diagnosis of NSCLC in England and the United States (2008-2012). We compared patient and clinical characteristics, as well as the distribution of age-standardized receipt of treatment by stage. We compared relative survival overall by stage and treatment. Finally, we assessed the degree to which stage distribution and stage-specific survival contributed to survival differences. RESULTS: Among patients age 66 years or older with a diagnosis of NSCLC in England (n = 86,978) and the United States (n = 84,415), the rate of pathological confirmation was 63% in England compared with 85% in the United States (a 22.2% difference [99% confidence interval: 22.8%-21.7%]). The rate of receipt of active treatment was lower in England than in the United States (46% versus 60%, for a difference of 14.0% [99% confidence interval: 13.3%-14.7%]). In England, we identified 98 excess deaths per 1000 patients with pathologically confirmed NSCLC; these additional deaths could be partially mitigated by adjusting stage at diagnosis (reduction to 54 excess deaths) or stage-specific survival (reduction to 36 excess deaths). CONCLUSIONS: Compared with patients with NSCLC in the United States, patients with NSCLC in England are less likely to present with early-stage disease and receive treatment and are more likely to die. Future work should explore whether the intensity of resources directed to diagnostic and therapeutic activity may help mitigate disparities in outcomes.
INTRODUCTION: Although prior research has demonstrated lower lung cancer survival in England than in the United States, more detailed comparisons are needed. We conducted a population-based analysis to compare diagnostic, treatment, and survival patterns. METHODS: Data from cancer registries and administrative databases were linked for older patients with a diagnosis of NSCLC in England and the United States (2008-2012). We compared patient and clinical characteristics, as well as the distribution of age-standardized receipt of treatment by stage. We compared relative survival overall by stage and treatment. Finally, we assessed the degree to which stage distribution and stage-specific survival contributed to survival differences. RESULTS: Among patients age 66 years or older with a diagnosis of NSCLC in England (n = 86,978) and the United States (n = 84,415), the rate of pathological confirmation was 63% in England compared with 85% in the United States (a 22.2% difference [99% confidence interval: 22.8%-21.7%]). The rate of receipt of active treatment was lower in England than in the United States (46% versus 60%, for a difference of 14.0% [99% confidence interval: 13.3%-14.7%]). In England, we identified 98 excess deaths per 1000 patients with pathologically confirmed NSCLC; these additional deaths could be partially mitigated by adjusting stage at diagnosis (reduction to 54 excess deaths) or stage-specific survival (reduction to 36 excess deaths). CONCLUSIONS: Compared with patients with NSCLC in the United States, patients with NSCLC in England are less likely to present with early-stage disease and receive treatment and are more likely to die. Future work should explore whether the intensity of resources directed to diagnostic and therapeutic activity may help mitigate disparities in outcomes.