The Association Between Green Tea Consumption with Cardiovascular Related Mortality: A Meta-Analysis

Abstract

Background: Tea (green or black) are among the most widely consumed beverages in adults worldwide. Recently, numerous studies claimed that green tea intake have been associated with reduced mortality, including cardiovascular disease related mortality. This study was aimed to investigate the association between green tea consumption with cardiovascular related mortality. Subjects and Method : This was a systematic review and meta-analysis study used articles which published in 2000 to 2021 from online databases, such as PubMed, ResearchGate, Science Direct, Google Scholar, and EBSCO. The dependent variable was cardiovascular related mortality. The independent variables was green tea consumption. The data was analyzed by RevMan 5.3 software. This study used the eligibility criteria with the PICO model, populations: COVID-19 general adults, intervention: >1 cups green tea consumption. comparison: null or <1 cup green tea consumption, outcome: cardiovascular related mortality. The inclusion criteria were an article describing the effect or relationship of green tea consumption with cardiovascular related mortality, original research, and study of cohort contain effect size of hazard ratio and match with the intervention design. The keywords used to search the database were “green tea” AND “cardio­vascular” AND “mortality” OR “Death” AND cohort. Results: A subgroup analysis was conducted from 4 articles which stated that cardiovascular related mortality is lower on adults who frequently consumed green tea more than one cups per day compare to adults who drank less than one cup per day (HR= 0.88; 95%CI= 0.85 to 0.92; p= <0.001) and it is statistically significant. Conclusion: The consumption of green tea more than one cups per day may reduce the risk of cardiovascular related mortality. Keywords: green tea, mortality, cardiovascular. Correspondence: Isnani Nurhayati. School of Health Sciences Mamba'ul 'Ulum, Jl. Ring Road Utara, Tawangsari, Mojosongo, Jebres, Surakarta, Central Java. Email: isnanimu@yahoo.com. Mobile: +62 812-2602-6662. Journal of Epidemiology and Public Health (2021), 06(04): 472-481 https://doi.org/10.26911/jepublichealth.2021.06.04.08