1 = male
2 = female

Family Risk Status
0 = control
1 = risk
999 = missing

Dyslexia Status
0 = no dyslexia
1 = dyslexia

Group status (comination risk and dyslexia status)
0 = LR-nonDys
1 = HR-Dys
2 = HR-nonDys
3 = LR-Dys
999 = missing