From: A replication study of GWAS findings in migraine identifies association in a Swedish case–control sample
Number of Alleles
Control % (n)
Migraine % (n)
0-1
0 (2)
0
2-3
2.0 (82)
1.5 (11)
4-5
16.4 (660)
14.4 (108)
6-7
39.1 (1573)
35.1 (263)
8-9
32.2 (1293)
33.6 (252)
10-11
9.1 (366)
13.9 (104)
12-13
1.0 (42)
1.3 (10)
14-16
0.1 (1)