. 2020 Sep 16;12:8545–8554. doi: 10.2147/CMAR.S264032

Table 2.

Characteristics of Studies on Metformin and Gastric Cancer Survival

Author (Year)	Population	District	Groups	No. of Patients	Results for Metformin Users
Lee (2016)²⁸	Gastric cancer after gastrectomy	Republic of Korea	Metformin; non-metformin	326 (132/194)	Improved survival, decreased recurrence
Lacroix (2018)²⁹	Gastric cancer with DM	Belgium	Metformin; non-metformin	298 (228/70)	Improved overall survival
Seo (2019)³⁰	Gastric cancer after gastrectomy	Republic of Korea	Metformin; non-metformin; non-DM	2,187 (103/139/1,945)	Improved survival, decreased recurrence
Baglia (2019)³¹	Gastric cancer with DM	China	Metformin; non-metformin	130	No impact on survival