Skip to main content
. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Biol Psychiatry. 2015 Dec 15;81(3):203–210. doi: 10.1016/j.biopsych.2015.12.007

Table 1.

Participant characteristics as a function of GTF2I rs13227433 genotype and race

C Carrier Mean (SD) AA Mean (SD) Group difference
Caucasian n=162 n=265
Age 19.8 (1.3) 19.7 (1.2) t(425)=.15, p=.88
Sex (% female) 54% 52% χ2(1)=.20, p=.65
Diagnosis 23% 22% χ2(1)=.22, p=.64
African American n=28 n=82
Age 19.6 (1.1) 19.7 (1.2) t(108)=−.48, p=.63
Sex (% female) 61% 74% χ2(1)=1.89, p=.17
Diagnosis 21% 21% χ2(1)=.01, p=.94
Asian n=57 n=214
Age 19.3 (1.2) 19.7 (1.3) t(269)=−1.96, p=.05
Sex (% female) 42% 59% χ2(1)=.5.12, p=.02
Diagnosis 16% 14% χ2(1)=.12, p=.74
Total n=247 n=561
Age 19.6 (1.3) 19.7 (1.3) t(806)=−.86, p=.39
Sex (% female) 52% 58% χ2(1)=2.27, p=.13
Diagnosis 21% 19% χ2(1)=.93, p=.33

Note: Diagnosis is the percentage of participants in each group meeting criteria for at least one current or past psychiatric diagnosis.