Coffee Consumption and Risk of Pancreatic Cancer: An Updated Meta-analysis of Cohort Studies
Keywords:
Coffee, Pancreatic cancer, Meta-analysisAbstract

Objective: To review the association between coffee consumption and risk of pancreatic cancer in a meta-analysis of cohort
studies and evaluate their dose–response relationship.Methods: We searched PubMed and EMBASE for cohort studies of coffee consumption and pancreatic cancer risk up to 5 January 2020. A fixed-effects model was used for pooling overall relative risk (RR) and corresponding 95% confidence interval (CI) for the highest versus lowest coffee consumption category, while the analysis was also stratified by sex, region and coffee type. Egger’s and Begg’s test was adopted to exam the publication bias. The dose-response analysis was performed as well. Results: A total of 21 high-quality studies from 18 publications were selected, including 2,859,065 participants and 11,023 pancreatic cancer cases. The pooled relative risk of 21 studies for highest versus lowest category of coffee consumption was 0.95 (95% CI 0.87-1.02, I2 = 43.4%, P for heterogeneity = 0.018). Subgroup analysis showed that coffee consumption was associated with a reduced pancreatic cancer risk in males (RR 0.72, 95%CI 0.53-0.91) but not in females (RR 0.89, 95% CI0.73-1.05). For dose-response analysis, the overall RR for increment of one cup/day of coffee consumption was 1.00 (95%CI, 0.99-1.02) of 15 studies, without statistically significant.Conclusions: This meta-analysis indicates non-significant association between coffee consumption and pancreatic cancer risk. No evidence of publication bias was found.
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