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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Prev Med. 2017 Sep 4;105:116–126. doi: 10.1016/j.ypmed.2017.08.017

Fig. 2.

Fig. 2

Forest plot for hemoglobin A1c.

Note. The sizes of the boxes are proportional to the weight of each individual study in the analyses.

The summary effect size is represented by a diamond. OHAs, oral hypoglycemic agents.