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Tong, Betty C., MD, MHS; Kosinski, Andrzej S., PhD; Burfeind, William R., MD; Onaitis, Mark W., MD; Berry, Mark F., MD; Harpole, David H., MD; D'Amico, Thomas A., MD
Journal of thoracic and cardiovascular surgery/The Journal of thoracic and cardiovascular surgery/The journal of thoracic and cardiovascular surgery, 07/2014, Volume: 148, Issue: 1Journal Article
Objectives Women with lung cancer have superior long-term survival outcomes compared with men, independent of stage. The cause of this disparity is unknown. For patients undergoing lung cancer resection, these survival differences could be due, in part, to relatively better perioperative outcomes for women. This study was undertaken to determine differences in perioperative outcomes after lung cancer surgery on the basis of sex. Methods The Society of Thoracic Surgeons' General Thoracic Database was queried for all patients undergoing resection of lung cancer between 2002 and 2010. Postoperative complications were analyzed with respect to sex. Univariable analysis was performed, followed by multivariable modeling to determine significant risk factors for postoperative morbidity and mortality. Results A total of 34,188 patients (16,643 men and 17,545 women) were considered. Univariable analysis demonstrated statistically significant differences in postoperative complications favoring women in all categories of postoperative complications. Women also had lower in-hospital and 30-day mortality (odds ratio, 0.56; 95% confidence interval, 0.44-0.71; P < .001). Multivariable analysis demonstrated that several preoperative conditions independently predicted 30-day mortality: male sex, increasing age, lower diffusion capacity, renal insufficiency, preoperative radiation therapy, cancer stage, extent of resection, and thoracotomy as surgical approach. Coronary artery disease was an independent predictor of mortality in women but not in men. Thoracotomy as the surgical approach and preoperative radiation therapy were predictive of mortality for men but not for women. Postoperative prolonged air leak and empyema predicted mortality in men but not in women. Conclusions Women have lower postoperative morbidity and mortality after lung cancer surgery. Some risk factors are sex-specific with regard to mortality. Further study is warranted to determine the cause of these differences and to determine their effect on survival.
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