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Fig. 2 | BMC Medicine

Fig. 2

From: Peripheral brain-derived neurotrophic factor (BDNF) as a biomarker in bipolar disorder: a meta-analysis of 52 studies

Fig. 2

Forest plots of between-group meta-analysis measuring peripheral brain-derived neurotrophic factor (BDNF) levels in subjects with bipolar disorder in euthymia compared to healthy controls. All studies referred to persons on psychiatric medication. The sizes of the circles are proportional to the sample size. Circles depict individual studies and diamonds depict the pooled effect size. Serum and plasma BDNF levels were not altered in persons with bipolar disorder in euthymia when compared to healthy controls

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