Fig. 2From: Brand interchangeability of pepsinogen tests in the real-world setting after eradication of Helicobacter pylori: a community-based studyCorrelations of numerical measures between two tests using scatter plots. The R indicates the correlation coefficient (Y axis: GastroPanel and X axis: LZ-Test). The linear regression lines for the PG-I, PG-II, and PG-I/II ratio are Y = 1.40X + 7.78, Y = 0.74X-0.99, and Y = 2.31X + 1.45, respectivelyBack to article page