The incidence of pleural space infections and the proportion of patients undergoing operative management have increased over time. Patients undergoing operations were younger and had less comorbid illness than those not undergoing operations but had a much lower risk of early death, even after adjusting for these factors.
Hypothesis
Healthcare system/provider biases and differences in patient characteristics are thought to be prevailing factors underlying racial disparities. The influence of these factors on the receipt of care would likely be mitigated among patients recommended optimal therapy. We hypothesized that there would be no significant evidence of racial disparities among early-stage lung cancer patients recommended surgical therapy.
Design
Retrospective cohort study.
Patients and Setting
Patients within the Surveillance, Epidemiology, and End-Results-Medicare database diagnosed with stage I or II lung cancer between 1992 and 2002 (follow-up through 2005).
Main Outcome Measures
Receipt of lung resection and overall survival.
Results
Among 17,739 patients recommended surgical therapy—mean (SD) age 75 (5) years, 89% white, 6% black—blacks less frequently underwent resection compared to whites (69% versus 83%, p<0.001). After adjustment, black race was associated with a lower odds of receiving surgical therapy (OR 0.43, 99% CI 0.36-0.52). Unadjusted 5-year survival rates were lower for blacks compared to whites (36% versus 42%, p<0.001). After adjustment, there was no significant association between race and death (HR 1.03, 99% CI 0.92-1.14) despite a 14% difference in receipt of optimal therapy.
Conclusions
Even among patients recommend surgical therapy, blacks underwent lung resection less often then whites. Unexpectedly, racial differences in the receipt of optimal therapy did not appear to affect outcomes. These findings suggest that distrust, beliefs and perceptions about lung cancer and its treatment, and limited access to care (despite insurance) might have a more dominant role in perpetuating racial disparities than previously recognized.
Video-assisted thoracoscopy was uncommonly used to manage lung cancer, although its use has increased over time. Video-assisted thoracoscopy and conventional resection were equivalent in terms of long-term survival.
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