MarkerName -- name of the SNP Allele1 -- first allele Allele2 -- second allele Freq1 -- frequency of Allele1 FreqSE -- standard error of the freq estimate MinFreq -- lower confidence bound of the freq estimate MaxFreq -- upper confidence bound of the freq estimate Weight -- sample size weight Zscore -- z-score of the SNP P-value -- p-value of the SNP Direction -- directions of the betas in the cohorts, in the order the cohorts are listed in the corresponding *.metalParams.txt file HetISq -- I-squared estimate for heterogeneity test HetChiSq -- Chi-Square estimate for heterogeneity test HetDf -- degrees of freedom for heterogeneity test HetPVal -- p-value for heterogeneity test