Definitive treatment patterns and survival in stage II non-small cell lung cancer
2018
Abstract Objectives This study delineated definitive treatment patterns for Stage II non-small cell lung cancer (NSCLC) in the United States and evaluated survival by treatment approach. Materials and Methods Patients with clinically-staged Stage II NSCLC treated with surgery-based therapy, chemoradiation, conventionally-fractionated radiation (CFR), or stereotactic body radiotherapy (SBRT) were identified using the National Cancer Database (NCDB). Median survival was estimated using Kaplan-Meier analysis. Crude and adjusted hazard ratios (HR) and 95% confidence intervals were computed using Cox regression modeling. Results Between 2004–2012, 19,749 patients met study criteria: 13,382 (67.8%) underwent surgery-based treatment, 4,310 (21.8%) received chemoradiation, 1,606 (8.1%) received CFR, and 451 (2.3%) received SBRT. Surgery and SBRT utilization increased over time while CFR and chemoradiation decreased (all p ≤ 0.002). Patients receiving radiation-based treatments were older, with more comorbidities, and higher T/N stage (all p Conclusion NCDB data demonstrate increasing use of surgery-based treatments and SBRT for Stage II NSCLC over time. Radiation-based therapies were associated with decreased survival compared to surgery. CFR was associated with decreased survival compared to chemoradiation and SBRT.
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