Association Between Alcohol Consumption and the Risk of Barrett's Esophagus: A Meta-Analysis of Observational Studies.
The association between alcohol consumption and Barrett's esophagus (BE) remained uncertain and controversial in the previous studies. We performed a meta-analysis of observational studies to clarify the association.We searched PubMed, Web of Science, and Embase for studies on alcohol consumption and risk of BE published before February 2015. A total of 20 studies reporting the association between alcohol consumption and the risk of BE were identified. Subgroup analyses, meta-regression analyses, sensitivity analyses, and publication bias tests were also performed. Several results from individual studies were pooled using a dose-response meta-analysis.A total of 20 studies involving 45,181 participants and 4432 patients of BE were included in the meta-analysis. No association was found between alcohol consumption and BE (relative risk [RR] = 1.10, 95% confidence interval [CI] 0.96-1.27, I = 48.60%) in our study. In subgroup analysis, alcohol consumption was associated with an increased risk of BE in men (RR = 1.35, 95% CI 1.13-1.61, I = 0.00%) and Asian population (RR = 1.60, 95% CI 1.03-2.49, I = 60.60%). In beverage-specific consumption analysis, liquor was associated with an increased risk of BE (RR = 1.16, 95% CI 1.02-1.32, I = 0.00%). Multivariate meta-regression analysis suggested that geographic area, and adjusted age, sex, body mass index, and smoke, might explain 70.75% of the heterogeneity between the studies. We also found the inverse association (RR = 0.84, 95% CI 0.72-0.98, I = 0.00%) between alcohol consumption and BE among subjects when compared with population controls.Overall, there was no significant association between alcohol consumption and BE. Alcohol consumption may be a risk factor of BE in men and Asian population, and liquor consumption may also increase the risk of BE. Significant inverse association was observed between alcohol consumption and BE, for comparisons with population controls.
From the Department of Health Statistics (QX, WG, TZ, CW, JL, RW, YZ, XM, JH), Second Military Medical University; Department of Gastroenterology (XS), Changhai Hospital, Second Military Medical University; and Department of Heath Services Management (WZ), Second Military Medical University, Shanghai, China.
Qin
Q
Xu
Wei
W
Guo
Xingang
X
Shi
Wei
W
Zhang
Tianyi
T
Zhang
Cheng
C
Wu
Jian
J
Lu
Rui
R
Wang
Yanfang
Y
Zhao
Xiuqiang
X
Ma
Jia
J
He
D000230:Adenocarcinoma / Q000453:epidemiology; D000428:Alcohol Drinking / Q000453:epidemiology*; D001471:Barrett Esophagus / Q000453:epidemiology*; D015897:Comorbidity; D004938:Esophageal Neoplasms / Q000453:epidemiology; D017408:Guidelines as Topic; D006801:Humans; D015999:Multivariate Analysis; D064887:Observational Studies as Topic; D011230:Precancerous Conditions / Q000453:epidemiology; D012307:Risk Factors