plink categorical covariates
I am trying to do GWAS using plink.
For categorical covariates, I understand that I should use "--write-covar --dummy-coding" option.
Then for the "cov" variable, new three variables "cov_2, cov_3, cov_0" are created.
After that, should I include all these three variables like "--covar-name cov_2,cov_3,cov_0"?
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