Table 4A. Multivariate analysis—age controlled injury effects on CFT/Raclopride binding.

Variable	Caudate—CFT: R2=0.494		Putamen—CFT: R2=0.668		Striatum—CFT: R2=0.225
	Estimate	P-value	Estimate	P-value	Estimate	P-value
Intercept	5.463	<0.001	4.024	<0.001	3.563	<0.001
Age	−0.054	0.012	−0.027	0.054	−0.013	0.466
Injury status	1.300	0.002	1.482	<0.001	0.773	0.029

	Caudate—RAC: R2=0.172		Putamen—RAC: R2=0.255		Striatum—RAC: R2=0.209
	Estimate	P-value	Estimate	P-value	Estimate	P-value
Intercept	3.193	<0.001	3.280	<0.001	3.102	<0.001
Age	−0.013	0.080	−0.015	0.018	−0.011	0.173
Injury status	−0.155	0.245	0.092	0.393	−0.276	0.055

DAT, dopamine transporter; DRD2, D2 receptor gene.

Bold entries are made for P-values representing comparisons that are statistically significant.