# This file contains a short description of the columns in the
# meta-analysis summary file, named 'N6meta1831.tbl'
# Marker - this is the marker name
# Allele1 - the first allele for this marker in the first file where it occurs
# Allele2 - the second allele for this marker in the first file where it occurs
# Freq1 - weighted average of frequency for allele 1 across all studies
# FreqSE - corresponding standard error for allele frequency estimate
# MinFreq - minimum frequency for allele 1 across all studies
# MaxFreq - maximum frequency for allele 1 across all studies
# Effect - overall estimated effect size for allele1
# StdErr - overall standard error for effect size estimate
# P-value - meta-analysis p-value
# Direction - summary of effect direction for each study, with one '+' or '-' per study
# HetISq - I^2 statistic which measures heterogeneity on scale of 0-100%
# HetChiSq - chi-squared statistic in simple test of heterogeneity
# df - degrees of freedom for heterogeneity statistic
# HetPVal - P-value for heterogeneity statistic
# R2 - custom variable 1
# Input for this meta-analysis was stored in the files:
# --> Input File 1 : CARDIA_18_3n6_012011.csv.gz
# --> Input File 2 : FA_183_results.csv.gz
# --> Input File 3 : MESA_GLA_07012011.csv.gz
# --> Input File 4 : ARIC_p18_3w6.txt.gz