4.5 Article

Sex difference of mortality by age and body mass index in gastric cancer

Journal

DIGESTIVE AND LIVER DISEASE
Volume 53, Issue 9, Pages 1185-1191

Publisher

ELSEVIER SCIENCE INC
DOI: 10.1016/j.dld.2021.05.006

Keywords

Age; Body mass index; Gastric cancer; Mortality; Sex

Funding

  1. National R&D Program for Cancer Control, Ministry of Health & Welfare, Republic of Korea [1631100]

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The impact of age, sex, and BMI on mortality in gastric cancer patients varies, with women showing more favorable outcomes in certain aspects compared to men. Results suggest the need for sex-specific approaches in prognostic predictions for gastric cancer patients.
Mortality difference by age, sex, body mass index (BMI) in gastric cancer (GC) has been controversial. We evaluated sex-specific mortality by age and BMI. A total of 5961 patients diagnosed with GC from 2005 to 2013 in a single tertiary center were included and were followed until December 2017. The plot in goodness-of-fit-test by sex was crossed, so we performed sex-specific analysis. Overall mortality was lower in women than in men (adjusted hazard ratio [aHR], 0.72). Favor outcomes in women compared to men were observed among patients older than 60 yr (aHR, 0.64; 95% CI, 0.56-0.74), a BMI less than 25 kg/m(2) (aHR, 0.69; 95% CI, 0.61-0.79), and stage I (aHR, 0.46; 95% CI, 0.38-0.56). In sex-specific analysis, mortality increased in age older than 60 yr in men, whereas it increased in both extreme ages ( < 40 yr and >= 70 yr) in women. Mortality by BMI was lowest at BMI of 25-29.9 kg/m(2) and gradually increased according to decrease of BMI in men; aHR, 1.24 (23-24.9 kg/m(2)), 1.44 (18.5-22.9 kg/m(2)), and 2.54 (BMI < 18.5 kg/m(2)). However, mortality decreased in patients with BMI >= 30 kg/m(2) (aHR, 0.46) in women. The sex discrepancies in GC mortality by age and BMI suggest the need for sex-specific approaches to prognostic prediction. (C) 2021 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.

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