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. 2016 Oct 19;18(6):520–527. doi: 10.1111/bdi.12438

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© 2016 The Authors Bipolar Disorders Published by John Wiley & Sons Ltd

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Power calculations based on pedigree structure were calculated for odds ratios (ORs) representing a low (OR=1.3) or moderate (OR=1.8) effect. Population prevalence (k) represents the risk for the narrow bipolar phenotype (bipolar disorder type I: k=0.01) and the broad bipolar phenotype (bipolar disorder type I/II, schizoaffective bipolar type, or bipolar disorder not otherwise specified: k=0.05)