Chunk #33 — Methods — Statistical Methods

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A genome-wide association study reveals variants in ARL15 that influence adiponectin levels.

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Since 2 cohorts measured adiponectin concentrations using an RIA method (BLSA and InCHIANTI) whilst all others used an ELISA method, and since one study, ALSPAC, was based on children, rather than adults, we tested for evidence of heterogeneity in the combined analysis using the Q-test P-value [59].