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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Behav Genet. 2015 Sep 21;46(2):151–169. doi: 10.1007/s10519-015-9737-3

Table 1.

Study descriptions: sample sizes, G (minor) allele frequencies (overall, in general dependence cases, in general dependence controls), proportions of male participants, and age distribution (minimum, first quartile, median, third quartile, and maximum) of each study.

Study Total
N
G-allele-
freq
Case
G-
allele-
freq
Control
G-
allele-
freq
proport-
male
age
min
age_q1 age_med age_q3 age_max
BG a 3999 0.14 0.13 0.17 0.83 18 25 28 30 58
CADD b 409 0.13 0.12 0.18 0.56 12 21 28 47 72
CATS c 1748 0.12 0.12 0.13 0.57 18 29 36 43 65
CEDAR-SADS d 747 0.12 0.12 0.12 0.35 14 18 37 42 65
Cinciripini e 627 0.11 0.09 0.15 0.48 18 33 42 50 74
COGA f 1024 0.12 0.11 0.13 0.46 18 36 43 51 77
COGEND g 2024 0.13 0.13 0.15 0.61 25 32 37 41 65
Finnish Health 2000 h 1025 0.21 0.20 0.22 0.8 30 37 46 54 87
FSCD i 558 0.13 0.13 0.10 0.5 18 25 34 40 54
FT12 j 617 0.22 0.48 20 22 22 23 27
GADD k 281 0.12 0.13 0.15 0.57 12 15 16 19 61
GESGA l 3501 0.12 0.11 0.11 0.65 18 39 47 56 84
Kreek m 750 0.11 0.10 0.13 0.59 17 31 43 52 82
MCTFR-Parents n 3842 0.11 0.10 0.11 0.46 30 43 46 50 72
NAG-AUS o 1281 0.12 0.12 0.12 0.59 18 36 43 50 82
NAG-FIN p 879 0.21 0.7 42 52 55 58 77
NYS q 552 0.1 0.07 0.10 0.49 35 37 39 41 44
OYSUP r 357 0.13 0.5 20 21 21 21 23
PAGES s 409 0.11 0.68 17 27 37 45 68
PiP t 809 0.11 0.11 0.15 0.48 18 35 43 53 79
ROMA u 732 0.21 0.16 0.38 0.83 18 25 28 32 53
SMOFAM v 166 0.12 0.18 0.12 0.63 26 27 29 30 62
Utah w 463 0.13 0.12 0.14 0.59 25 54 61 67 86
VA-Twin x 672 0.12 0.15 0.10 0.32 21 30 38 46 58
Yale-Penn y 1217 0.12 0.41 16 30 39 46 72
Total 28689 (0.10–0.22) (0.32–0.83) (12–42) (15–54) (16–61) (19–67) (23–87)