Fig. 1From: Determinants of vitamin B12 deficiency in patients with type-2 diabetes mellitus — A primary-care retrospective cohort studyCorrelation of “Metformin daily dose” and “Metformin 1-year cumulative dose” (n = 592). The 1st variable gives a convenient cross-sectional estimate of metformin exposure whilst the 2nd variable gives a more accurate cumulative measure of metformin exposureBack to article page