Fig. 2From: Impact of metformin on the risk and treatment outcomes of tuberculosis in diabetics: a systematic reviewForest plot of the association between metformin and the risk of TB disease or LTBI. Abbreviations: TB, tuberculosis; LTBI, latent tuberculosis infection; n, number of cases; N, number of participants; CI, confidence interval; OR, odds ratio; SD, standard deviationBack to article page