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Abstract
A systematic review and meta-analysis of prospective cohort studies was conducted to examine the association of potato consumption and risk of all-cause, cancer and cardiovascular mortality in adults. We searched PubMed, Scopus databases up to September 2018 for all relevant published papers. All analyses were performed on HRs or RRs and 95% CIs. In twenty prospective studies, 25,208 cases were reported for all-cause mortality, 4877 for cancer mortality and 2366 for CVD mortality. No significant association was found between potato consumption and risk of all-cause (0.90; 95% CI: 0.8, 1.02, p = 0.096) and cancer (1.09; 95% CI: 0.96, 1.24, P = 0.204) mortality. In addition, no significant linear association was found between each 100 g/d increments in potato consumption and risk of all-cause (P = 0.7) and cancer (P = 0.09) mortality. Moreover, nonlinear association between potato consumption and risk of cancer mortality was non-significant (P-nonlinearity = 0.99). In addition, two of three studies which examined the association of potato consumption with CVD mortality did not find any significant relationship. There was no evidence for publication bias in this study. We failed to find significant association between potato consumption and risk of mortality. Further studies are required to confirm this issue.
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Notes on contributors
Manije Darooghegi Mofrad
MDM, LA, AS designed the research. MDA and AM independently done the literature search and screening; MDM analyzed data; MDM and AM wrote the manuscript and AM helped improve English writing; LA and AS revised the manuscript. All authors read and approved the final manuscript.
Alireza Milajerdi
MDM, LA, AS designed the research. MDA and AM independently done the literature search and screening; MDM analyzed data; MDM and AM wrote the manuscript and AM helped improve English writing; LA and AS revised the manuscript. All authors read and approved the final manuscript.
Ali Sheikhi
MDM, LA, AS designed the research. MDA and AM independently done the literature search and screening; MDM analyzed data; MDM and AM wrote the manuscript and AM helped improve English writing; LA and AS revised the manuscript. All authors read and approved the final manuscript.
Leila Azadbakht
MDM, LA, AS designed the research. MDA and AM independently done the literature search and screening; MDM analyzed data; MDM and AM wrote the manuscript and AM helped improve English writing; LA and AS revised the manuscript. All authors read and approved the final manuscript.