. Author manuscript; available in PMC: 2014 Mar 1.

Published in final edited form as: J Cogn Neurosci. 2013 Aug 12;25(12):10.1162/jocn_a_00464. doi: 10.1162/jocn_a_00464

Table 1.

Behavioral comparison by COMT genotype.

	met carrier (n = 11)	val/val (n = 4)	t₍₁₃₎	p
General
Age	26.4 ± 1.5	26.3 ± 2.8	0.04	ns
SES	51.2 ± 3.2	46.4 ± 6.2	0.74	ns
Personal and Familial Substance Use
AUDIT	4.7 ± 1.0	3.3 ± 0.8	0.82	ns
DUSI	0.13 ± 0.06	0.22 ± 0.08	−0.70	ns
FTQ	0.20 ± 0.05	0.13 ± 0.13	0.74	ns
Psychometric Measures
BIS	56.6 ± 1.6	59.3 ± 4.8	−0.69	ns
FTPI-Mean Extension	11.2 ± 2.5	8.1 ± 3.1	0.67	ns
FTP1-Max Extension	42.6 ± 8.9	38.5 ± 14.2	0.24	ns
ASP	8.0 ± 1.2	8.0 ± 0.7	0.00	ns
BDI	3.6 ± 0.9	7.0 ± 2.5	−1.65	ns
STAI-Trait Score	31.6 ± 2.5	39.5 ± 6.1	−1.47	ns
LOC	11.7 ± 1.0	13.8 ± 1.8	−1.00	ns

Values are reported as mean ± standard deviation. Reported p-values reflect the results of unpaired two-tailed comparison between groups. Exact p-values reported unless p < 0.001.

^†

p-value represents results of χ² test.

ASP, Anti-social Practices; AUDIT, Alcohol Use Disorders Identification Test; BDI, Beck Depression Inventory; BIS, Barratt Impulsivity Scale; DUSI, Drug Use Screening Inventory; FTQ, Family Tree Questionnaire; FTPI, Future Time Perspective Inventory; LOC, Locus of Control; SES, Socioeconomic Status; STAI, State-Trait Anxiety Inventory.