Export statistics is an special case of export. Instead of export full variants, only the variant cohort statistics are exported.
As for variants export, there are multiple possible output formats:
VCF : Standard VCF format without samples information, with the stats as values in the INFO column.
VCF
##fileformat=VCFv4.2
##FILTER=<ID=.,Description="No FILTER info">
##FILTER=<ID=PASS,Description="Valid variant">
##INFO=<ID=AC,Number=A,Type=Integer,Description="Total number of alternate alleles in called genotypes, for each ALT allele, in the same order as listed">
##INFO=<ID=AF,Number=A,Type=Float,Description="Allele Frequency, for each ALT allele, calculated from AC and AN, in the range (0,1), in the same order as listed">
##INFO=<ID=AN,Number=1,Type=Integer,Description="Total number of alleles in called genotypes">
#CHROM POS ID REF ALT QUAL FILTER INFO
22 16050115 . G A . PASS AC=1;AF=0.001;AN=1000
22 16050213 . C T . PASS AC=1;AF=0.001;AN=1000
22 16050319 . C T . PASS AC=1;AF=0.001;AN=1000
22 16050607 . G A . PASS AC=2;AF=0.002;AN=1000
TSV (Tab Separated Values). Simple format with each cohort in one column.
TSV
#CHR POS REF ALT ALL_AN ALL_AC ALL_AF ALL_HET ALL_HOM
22 16050213 C T 1000 1 0.001 0.002 0.0
22 16050607 G A 1000 2 0.002 0.004 0.0
22 16050740 A - 1000 1 0.001 0.002 0.0
22 16050840 C G 1000 13 0.013 0.026 0.0
22 16051075 G A 1000 2 0.002 0.004 0.0
22 16051249 T C 1000 91 0.091 0.162 0.01
22 16051453 A C 998 74 0.074 0.144 0.004
22 16051453 A G 926 2 0.002 0.144 0.004
22 16051723 A - 1000 12 0.012 0.024 0.0
22 16051816 T G 1000 2 0.002 0.004 0.0
