Clinical characteristics Frequency (%) Frequency (%) value
GD patients Healthy controls
Total(N) 650 1300
Average age [M±SD] 38.8±14.7 40.1±12.6 0.574
Male 194 (29.8) 443 (34.0)
Female 456 (70.2) 857 (66.0)
Ratio of male to female 1: 2.35 1: 1.93 0.131