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학술저널
저자정보
박상욱 (서울대학교) 이동운 (서울대학교) 박지원 (서울대학교) 유승범 (서울대학교) 신루미 (서울대학교) 정승용 (서울대학교) 박규주 (서울대학교)
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대한종양외과학회 KOREAN JOURNAL OF CLINICAL ONCOLOGY Korean Journal of Clinical Oncology 제12권 제2호
발행연도
2016.12
수록면
91 - 96 (6page)

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Purpose: The studies on the impact of obesity on survival for colorectal cancer (CRC) in Korea are still insufficient. The aim of this study is to evaluate body mass index (BMI) as a prognostic factor of CRC.
Methods: From January 2006 to December 2008, a total of 1873 patients with CRC who underwent surgery at Seoul National University Hospital were included in this study. Study participants were divided into five BMI groups: underweight (<18.5 kg/m2), normal weight (18.5– 22.9 kg/m2), overweight (23–24.9 kg/m2), obese (25–29.9 kg/m2) and morbidly obese (≥30 kg/m2). Clinicopathological variables and survival data were reviewed retrospectively. Overall survival was analyzed using log-rank test and Cox regression analysis.
Results: Overall survivals of underweight, normal weight, overweight, obese, and morbidly obese groups were significantly different (5-year overall survivals rates: 54.4%, 73.2%, 78.6%, 77.2%, and 53.8%, respectively; P<0.001). In multivariable analysis for overall survival, BMI was an independently significant risk factor. Normal weight, overweight, and obese groups had lower hazard ratios for overall survival than underweight group (hazard ratio [HR], 0.626; 95% confidence interval [CI], 0.462–0848, P=0.002; HR, 0.530, 95% CI, 0.377–0.744, P<0.001; HR, 0.511, 95% CI, 0.470–1.675, P<0.001, respectively). The hazard ratio of morbid obese group was not significantly different from that of underweight group (HR=0.887, 95% CI=0.470–1.675, P=0.712).
Conclusion: BMI can be a prognostic factor for CRC in Korea. Underweight and morbidly obese were associated with poor overall survival. Large multicenter studies in the Korean population is needed for a definite conclusion.

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UCI(KEPA) : I410-ECN-0101-2018-514-000888100