. Author manuscript; available in PMC: 2009 Oct 5.

Published in final edited form as: Am J Med Genet B Neuropsychiatr Genet. 2008 Oct 5;147B(7):1205–1212. doi: 10.1002/ajmg.b.30754

Table 4.

Final General Linear Models

	Subjective Social Support		Social Interaction
	F value	p value	F value	p value
Genotype	5.33	0.0216	3.66	0.0567
Depression	81.62	< 0.0001	28.96	< 0.0001
Education	0.15	0.6967	3.16	0.0762

Social support measures were log-transformed. Genotype (Val66 homozygote or Met66 allele carrier) and depression (MDD or nondepressed) were dichotomous variables. Age and sex were not included in models as they were not significantly different between BDNF genotype groups, and not significantly related to social support measures. Education (in years) was a continuous variable. Each variable had 1 degree of freedom while the overall model had 357 degrees of freedom. Initial models included a depression by genotype interaction term, however these were not statistically significant so were removed.