Body mass index and body surface area and their associations with outcomes in stage II and III colon cancer

被引:17
作者
Alipour S. [1 ]
Kennecke H.F. [1 ,2 ]
Woods R. [3 ]
Lim H.J. [1 ,2 ]
Speers C. [3 ]
Brown C.J. [3 ]
Gill S. [1 ,2 ]
Renouf D.J. [1 ,2 ]
Cheung W.Y. [1 ,2 ]
机构
[1] Department of Medicine, University of British Columbia, Vancouver, BC, V5Z 1M9
[2] Division of Medical Oncology, British Columbia Cancer Agency, Vancouver Clinic, Vancouver, BC, V5Z 4E6
[3] Cancer Surveillance and Outcomes, British Columbia Cancer Agency, Vancouver, BC, V5Z 1G1
关键词
Body mass index; Body surface area; Colon cancer; Obesity; Outcomes;
D O I
10.1007/s12029-012-9472-4
中图分类号
学科分类号
摘要
Background Our study aims were to measure the associations between body mass index (BMI) and body surface area (BSA) with outcomes for stage II and III colon cancer and to evaluate if the effect of obesity is modified by disease stage and receipt of adjuvant therapy. Methods Using a prospective cohort of stage II and III colon cancer patients who were referred between 2001 and 2005, we compared 3-year relapse-free survival (3-year RFS), 5- year cancer-specific survival (5-year CSS), and 5-year overall survival (5-year OS) rates among different BMI and BSA categories. Cox proportional-hazards models were constructed to explore the relationships between different body compositions and outcomes while adjusting for confounders. Results Postoperative height and weight were used to classify 913 patients as normal weight (n0424, BMI <25 kg/ m2), overweight (n0319, BMI 25-30 kg/m2), and obese (n0 170, BMI >30 kg/m2). Using Mosteller formula, 684 subjects had normal BSA (≤2.0 m2) and 229 had high BSA (>2.0 m2). Obese subjects experienced similar 3-year RFS (61.9 vs. 66.5 vs. 63.6 %, p00.51), 5-year CSS (65.6 vs. 72.4 vs. 68.0 %, p00.22), and 5-year OS (60.8 vs. 64.0 vs. 62.2 %, p00.69) when compared to overweight subjects and those with normal BMIs, respectively. Likewise, individuals with high BSA had similar outcomes as those with normal BSA (66.2 vs. 63.6 %, p00.64 for 3-year RFS, 70.3 vs. 68.6 %, p00.62 for 5-year CSS, and 64.5 vs. 61.9 %, p0 0.48 for 5-year OS). In Cox models, advanced age, male gender, stage III disease, and poor performance status correlated with inferior RFS, CSS, and OS, but BMI and BSA did not. Conclusions Obesity as measured by either BMI or BSA was not associated with differences in outcomes in stage II and III colon cancer. © Springer Science+Business Media New York 2012.
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页码:203 / 210
页数:7
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