. Author manuscript; available in PMC: 2009 Apr 6.

Published in final edited form as: Neuropsychopharmacology. 2007 Apr 11;33(2):425–430. doi: 10.1038/sj.npp.1301417

Table 1.

Relationship of CSF Testosterone and MAOALPR Genotype on Aggression (Brown–Goodwin Lifetime Aggression Scale Total Score), ASPD and CSF MHPG

	Aggression
Predictors	β (SE)	t	P
MAOA	0.74 (0.77)	0.96	0.33
Testosterone^a	1.27 (0.75)	1.7	0.09
MAOA*testosterone	2.21 (0.73)	3.04	0.002
	ASPD
	β (SE)	χ ²	P

MAOA	0.10 (0.23)	0.21	0.64
Testosterone^a	0.67 (0.25)	6.9	0.008
MAOA*testosterone	0.61 (0.21)	4.5	0.04
	CSF MHPG
	β (SE)	t	P

MAOA	−0.64 (0.79)	−0.81	0.03
Testosterone^a	−1.62 (0.77)	−2.09	0.42
MAOA*testosterone^a	1.88 (0.76)	2.47	0.01

ASPD, antisocial personality disorder; β, regression coefficient; SE, standard error.

CSF testosterone levels have been transformed into z scores (mean of zero and SD of one) before entry into the model. Therefore, the corresponding β-value indicates the effect on the outcome variable (eg increase in aggression score or increase in risk of ASPD) for each SD increase in CSF testosterone.