Anna Lautamäki1, Jarmo Gunn1,2, Jussi Sipilä3,4, Päivi Rautava5,6, Eero Sihvo7, Ville Kytö1,8,9,10. 1. Heart Center, Turku University Hospital, Turku, Finland. 2. Department of Surgery, University of Turku, Turku, Finland. 3. Department of Neurology, North Karelia Central Hospital, Joensuu, Finland. 4. Department of Neurology, University of Turku, Turku, Finland. 5. Clinical Research Center, Turku University Hospital, Turku, Finland. 6. Department of Public Health, University of Turku, Turku, Finland. 7. Department of Surgery, Central Finland Central Hospital, Jyväskylä, Finland. 8. Research Center of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland. 9. Center for Population Health Research, Turku University Hospital and University of Turku, Turku, Finland. 10. Administative Center, Hospital District of Southwest Finland, Turku, Finland.
Abstract
OBJECTIVES: Surgery is the standard treatment in early-stage non-small-cell lung cancer and select cases of small-cell lung cancer, but gender differences in its use and outcome are poorly known. Gender differences in surgical resection rates and long-term survival after lung cancer surgery were therefore investigated. METHODS: In Finland, 3524 patients underwent resection for primary lung cancer during 2004-2014. Surgical rate and mortality data were retrospectively retrieved from 3 nationwide compulsory registries. Survival was studied by comparing propensity-matched cohorts. Median follow-up was 8.6 years. RESULTS: Surgery rate was higher in women (15.9% vs 12.3% in men, P < 0.0001). Overall survival was 85.3% 1 year, 51.4% 5 years, 33.4% 10 years and 24.2% at 14 years from surgery. In matched groups, survival after resection was better in women after 1 year (91.3% vs 83.3%), 5 years (60.2% vs 48.6%), 10 years (43.7% vs 27.9%) and 14 years (29.0% vs 21.1%) after surgery [hazard ratio (HR) 0.66; confidence interval (CI) 0.58-0.75; P < 0.0001]. Of all first-year survivors, 39.1% were alive 10 years and 28.3% 14 years after surgery. Among these matched first-year survivors, women had higher 14-year survival (36.9% vs 25.3%; HR 0.75; CI 0.65-0.87; P = 0.0002). CONCLUSIONS: Surgery is performed for lung cancer more often in women. Women have more favourable short- and long-term outcome after lung cancer surgery. Gender discrepancy in survival continues to increase beyond the first year after surgery.
OBJECTIVES: Surgery is the standard treatment in early-stage non-small-cell lung cancer and select cases of small-cell lung cancer, but gender differences in its use and outcome are poorly known. Gender differences in surgical resection rates and long-term survival after lung cancer surgery were therefore investigated. METHODS: In Finland, 3524 patients underwent resection for primary lung cancer during 2004-2014. Surgical rate and mortality data were retrospectively retrieved from 3 nationwide compulsory registries. Survival was studied by comparing propensity-matched cohorts. Median follow-up was 8.6 years. RESULTS: Surgery rate was higher in women (15.9% vs 12.3% in men, P < 0.0001). Overall survival was 85.3% 1 year, 51.4% 5 years, 33.4% 10 years and 24.2% at 14 years from surgery. In matched groups, survival after resection was better in women after 1 year (91.3% vs 83.3%), 5 years (60.2% vs 48.6%), 10 years (43.7% vs 27.9%) and 14 years (29.0% vs 21.1%) after surgery [hazard ratio (HR) 0.66; confidence interval (CI) 0.58-0.75; P < 0.0001]. Of all first-year survivors, 39.1% were alive 10 years and 28.3% 14 years after surgery. Among these matched first-year survivors, women had higher 14-year survival (36.9% vs 25.3%; HR 0.75; CI 0.65-0.87; P = 0.0002). CONCLUSIONS: Surgery is performed for lung cancer more often in women. Women have more favourable short- and long-term outcome after lung cancer surgery. Gender discrepancy in survival continues to increase beyond the first year after surgery.
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