ResultsSharingFormat: Difference between revisions

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(IZJu5O Thanks for sharing, this is a fantastic post. Great.)
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== Results Sharing ==
IZJu5O Thanks for sharing, this is a fantastic post. Great.
The following variables should be included when sharing imputed results for meta-analysis; large files can be shared among small groups via secure file transfer site (as described in [[ResultsSharing|Results Sharing]]).
Many working groups use [http://catalyst.washington.edu/web_tools/sharespaces.html ShareSpaces], a secure web-based file-sharing system implemented by the University of Washington's Catalyst computing group. The service has ample storage space for large files and limits access to a select group identified by UW [[Netidlist|Netids]] or by [http://protectnetwork.org/ Protect Network] IDs. 
 
 
ShareSpace Access is arranged via working groups. New members who expect to need access to these sites should register for a ProtectNetworkID, [https://www.protectnetwork.org/pnidm/registration.html?execution=e1s1 register online]<br>([http://catalyst.washington.edu/help/account/getprotectnetwork.html step-by-step instructions])


== File Formats ==
== File Formats ==

Revision as of 17:11, 2 September 2012

IZJu5O Thanks for sharing, this is a fantastic post. Great.

File Formats

Results should be shared as plain text files, with the following variable names:

variable name description
SNPID SNP ID as rs number
chr chromosome number. Use symbols X, XY, Y and mt for non-autosomal markers.
position physical position for the reference sequence (indicate build 35/36 in readme file)
coded_all coded allele, also called modeled allele (in example of A/G SNP in which AA=0, AG=1 and GG=2, the coded allele is G)
noncoded_all the other allele
strand_genome + or -, representing either the positive/forward strand or the negative/reverse strand of the human genome reference sequence; to clarify which strand the coded_all and noncoded_all are on
beta beta estimate from genotype-phenotype association, at least 5 decimal places -- “NA” if not available
SE standard error of beta estimate, to at least 5 decimal places -- “NA” if not available
pval p-value of test statistic, here just as a double check -- “NA” if not available
AF_coded_all allele frequency for the coded allele -- “NA” if not available
HWE_pval exact test Hardy-Weinberg equilibrium p-value -- only directly typed SNPs, NA for imputed
callrate genotyping callrate after exclusions
n_total total sample with phenotype and genotype for SNP
imputed 1/0 coding; 1=imputed SNP, 0=if directly typed
used_for_imp 1/0 coding; 1=used for imputation, 0=not used for imputation
oevar_imp observed divided by expected variance for imputed allele dosage

Please note that a README should be uploaded with a very brief description of the data uploaded, the date, the NCBI human genome reference sequence used (e.g. NCBI 36.2) for strand reference, and the scale of the beta estimates; please also include in the README the SNP HWE p-value, callrate and minor allele frequency filters that have been applied.