Data download

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NB: These files are tab-delimited text files that are linked by the column "StudyID". Information on the variables in each file is below.

Full summary statistics uploaded to Zenodo can be downloaded from here: EWAS Catalog Zenodo datasets

Meta-data variables

This meta-data file has the following pieces of information:

Author - the first author of the publication (surname then initials).
Consortium - the name of the or cohorts used.
PMID - the PubMed ID of the publication.
Date - the date the paper was published (YY-MM-DD).
Trait - the name of the trait.
EFO - the corresponding ontology term(s) for the trait.
Analysis - description of the analysis performed.
Source - the table where the result can be found in the paper.
Outcome - the outcome of the analysis.
Exposure - the exposure of the analysis.
Covariates - the covariates adjusted for in the analysis.
Outcome_Units - the units of the outcome.
Exposure_Units - the units of the exposure.
Methylation_Array - the array used to measure the methylation.
Tissue - the tissue in which the methylation was measured.
Further_Details - any further details on the analysis.
N - the total number of participants used in the analysis.
N_Cohorts - the total number of cohorts used in the analysis.
Age - the age group participants belonged to.
Sex - sex of individuals used in the analysis.
Ethnicity - ethnicity of the individuals used in the analysis.
StudyID - ID that can be used to link the meta-data to the results.

Results variables

The results file has the following pieces of information:

CpG - the CpG site.
Location - the location of the CpG based on hg19 coordinates.
Chr - the chromosome where the CpG is located based on hg19 coordinates.
Pos - the position where the CpG is located based on hg19 coordinates.
Gene - the gene where the CpG is mapped to based on the Ilumina manifest.
Type - the type of genomic location the CpG is in (e.g. CpG island).
Beta - the effect estimate.
SE - the standard error of beta.
P - p-value.
Details - any additional details on the analysis (e.g. sub-trait).
StudyID - ID that can be used to link the meta-data to the results.

NB: Missing information is left blank or as NA.