There are numerous mechanisms by which scientists who are not COGA co‐investigators can access COGA data (cell lines, derived genotypes and gene expression data, EEG/ERP, behavioral and clinical data). The COGA website provides additional details on how COGA data may be accessed (https://cogastudy.org/resources-for-researchers/) and additional details may also be found in the accompanying reviews on these data modalities (see also footnote of Table 1 for dbGaP accession numbers). While some investigators elect to obtain COGA data from sources such as dbGaP, many collaborate directly with COGA scientists, which is especially the case when an investigator wishes to access a phenotype that requires additional levels of data extraction and coding, or a specific analysis using their preferred method. Such a collaboration requires the submission of a brief proposal that is sponsored by a COGA investigator. A review committee, composed of members representing the various aspects of COGA's research, approves and monitors these proposals. This mechanism is consistent with protocols established by many multi‐site consortia that collect sensitive and complex data types. Assigning a COGA sponsor also ensures that the external investigator
