TY - JOUR
T1 - Breast-Conserving Surgery in Older Patients with Invasive Breast Cancer
T2 - Current Patterns of Treatment Across the United States
AU - Smith, Grace L.
AU - Xu, Ying
AU - Shih, Ya Chen T.
AU - Giordano, Sharon H.
AU - Smith, Benjamin D.
AU - Hunt, Kelly K.
AU - Strom, Eric A.
AU - Perkins, George H.
AU - Hortobagyi, Gabriel N.
AU - Buchholz, Thomas A.
N1 - Funding Information:
Supported by the Department of Defense Multidisciplinary Postdoctoral Award and the Odyssey Program and Theodore N Law Endowment for Scientific Achievement at the University of Texas MD Anderson Cancer Center (GL Smith).
PY - 2009/10
Y1 - 2009/10
N2 - Background: Breast-conserving surgery (BCS) followed by radiotherapy is as effective as mastectomy for treatment of early invasive breast cancer. But earlier studies report low BCS use rates of 12% to 43% nationally, especially in older patients. We sought to determine current patterns and predictors of BCS use. Study Design: In a national Medicare database of all beneficiaries (age greater than 65 years) with incident invasive breast cancer treated with operation in 2003, claims codes identified BCS versus mastectomy and demographic, treatment, and geographic region covariates. The 2003 Area Resource File provided socioeconomic covariates. Logistic regression modeled predictors of BCS. Results: In 56,725 women, 59% were treated with BCS versus 41% with mastectomy. BCS was more likely in women who were younger than 70 years (odds ratio [OR], 1.37; 95% CI, 1.31 to 1.44; p < 0.001) and had lymph node-negative disease (OR, 1.60; 95% CI, 1.52 to 1.68; p < 0.001). Socioeconomic factors influenced use, with BCS more likely in areas with low poverty (OR, 1.05; 95% CI, 1.00 to 1.09; p = 0.03), high education (OR, 1.13; 95% CI, 1.08 to 1.19), high density of radiation oncologists (OR, 1.30; 95% CI, 1.06 to 1.59), and in metropolitan areas (OR, 1.20; 95% CI, 1.14 to 1.26). Significant geographic variation existed: 70% of women were treated with BCS in northeastern New England compared with only 48% to 50% in the South (p < 0.001). Conclusions: Currently, more than half of older women across the US diagnosed with nonmetastatic invasive breast cancer treated surgically receive BCS, representing a substantial increased use compared with historical data. Lack of BCS use appears in part associated with socioeconomic disadvantage, suggesting that persistent barriers to breast conservation exist.
AB - Background: Breast-conserving surgery (BCS) followed by radiotherapy is as effective as mastectomy for treatment of early invasive breast cancer. But earlier studies report low BCS use rates of 12% to 43% nationally, especially in older patients. We sought to determine current patterns and predictors of BCS use. Study Design: In a national Medicare database of all beneficiaries (age greater than 65 years) with incident invasive breast cancer treated with operation in 2003, claims codes identified BCS versus mastectomy and demographic, treatment, and geographic region covariates. The 2003 Area Resource File provided socioeconomic covariates. Logistic regression modeled predictors of BCS. Results: In 56,725 women, 59% were treated with BCS versus 41% with mastectomy. BCS was more likely in women who were younger than 70 years (odds ratio [OR], 1.37; 95% CI, 1.31 to 1.44; p < 0.001) and had lymph node-negative disease (OR, 1.60; 95% CI, 1.52 to 1.68; p < 0.001). Socioeconomic factors influenced use, with BCS more likely in areas with low poverty (OR, 1.05; 95% CI, 1.00 to 1.09; p = 0.03), high education (OR, 1.13; 95% CI, 1.08 to 1.19), high density of radiation oncologists (OR, 1.30; 95% CI, 1.06 to 1.59), and in metropolitan areas (OR, 1.20; 95% CI, 1.14 to 1.26). Significant geographic variation existed: 70% of women were treated with BCS in northeastern New England compared with only 48% to 50% in the South (p < 0.001). Conclusions: Currently, more than half of older women across the US diagnosed with nonmetastatic invasive breast cancer treated surgically receive BCS, representing a substantial increased use compared with historical data. Lack of BCS use appears in part associated with socioeconomic disadvantage, suggesting that persistent barriers to breast conservation exist.
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U2 - 10.1016/j.jamcollsurg.2009.06.363
DO - 10.1016/j.jamcollsurg.2009.06.363
M3 - Article
C2 - 19801315
AN - SCOPUS:70349434695
SN - 1072-7515
VL - 209
SP - 425-433.e2
JO - Journal of the American College of Surgeons
JF - Journal of the American College of Surgeons
IS - 4
ER -