Family Type
C = Control-Family Sample
H = Hopfer Sample
K = CAP Sample
R = Retest-Family Sample
S = Selected-Family Sample
T = Twin Sample

0 = Female
1 = Male

CAP relationship code
1 = Adoptive proband
2 = Adopters natural child
3 = Control proband
8 = Adoptive unrelated

Twin Sample
1 = Longitudinal Sample
2 = Community Sample

Twin Zygosity
0 = Undetermined
1 = MZ
2 = DZ-Same Sex
3 = DZ-Opp Sex