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Patterns of care and survival for lung cancer: Results of the European population-based high-resolution study

M. Sant,Caterina Daidone,K. Innos,R. Marcos-Gragera,K. Vanschoenbeek,Miguel Rodríguez Barranco,Ester Oliva Poch,R. Lillini

Published 2023 in Frontiers in Epidemiology

ABSTRACT

Objectives To investigate differences in lung cancer (LC) management and survival using data from European population cancer registries. Methods We analysed 4,602 lung cancer cases diagnosed in 2010–2013, followed-up to 2019 in five countries. Multivariable logistic regression was used to calculate the Odds Ratio (OR) of surgery for stages I–II LC or chemo- or radiotherapy for stages III–IV LC. Relative survival (RS) was estimated by the actuarial method; Relative Excess Risk of death (RER), with 95% CI, was calculated by generalized linear models. Results Diagnostic work-up was extensive for 65.9% patients (range 57%, Estonia, Portugal - 85% (Belgium). Sixty-six percent of stages I–II patients underwent surgery; compared to non-operated, their adjusted OR decreased with age and was associated with main bronchus cancer (OR vs. lobes 0.25, CI, 0.08–0.82), stage II (OR vs. stage I: 0.42, CI, 0.29–0.60), comorbidity (OR vs. absent: 0.55, CI, 0.33–0.93), country (ORs: Estonia 1.82, CI, 1.28–2.60; Belgium 0.62, CI, 0.42–0.91; Portugal 0.69, CI, 0.52–0.93). Almost half of stages III–IV patients received chemo- or radiotherapy only; the adjusted OR vs. non receiving decreased with age and was associated with unspecified cancer topography or morphology. The adjusted five-year RER increased with age and stage and was lower for women (0.78, CI, 0.72–0.86), above the reference for main bronchus cancer (1.37, CI, 1.21–1.54) and unspecified morphology (1.17, CI, 1.05–1.30). Surgery carried the lowest mortality (RS 56.9; RER 0.13, CI, 0.11–0.15) with RER above the mean in Estonia (1.20, CI, 1.10–1.30), below it in Portugal (0.88, CI, 0.82–0.93) and Switzerland (0.91, CI, 0.84–0.99). Comorbidity (1.21, CI, 1.09–1.35) and not smoking (0.68, CI, 0.57–0.81) were associated with RER. Conclusions The survival benefit of early diagnosis, allowing curative surgery, was evident at the population level. Screening for subjects at risk and adhesion to standard care should be incremented across the EU by funding better equipment and training health personnel.

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