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. 2014 Dec 20;55(3):418–426. doi: 10.1093/ilar/ilu042

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© The Author 2014. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs license (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Forest plot, summarizing fictive results of eight individual studies, comparing the effects of omega-3 fatty acid supplementation vs. control treatment. Abbreviations: SD: standard deviation; Std. Mean Difference: standardized mean difference; IV, Random: a random-effects meta-analysis is applied, with weights based on inverse variances; 95% CI: 95% confidence interval; df: degrees of freedom; Tau² and I²: heterogeneity statistics; Chi²: the chi-squared test value; Z: Z-value for test of the overall effect; P: p value.