Table 2.

Correlation between SN neuronal number, volume, neuronal density and age (n=15)

	Side	Female		Male		Female + Male
		Spearman’s rho	p-value	Spearman’s rho	p-value	Spearman’s rho	p- value
Number of neurons	R	−0.2857	0.49	−0.4286	0.34	−0.2788	0.31
	L	−0.3810	0.35	0.2500	0.59	−0.2073	0.46
	R + L	−0.2857	0.49	−0.0714	0.88	−0.2627	0.34
Volume	R	−0.1905	0.65	−0.3571	0.43	−0.2645	0.34
	L	−0.5952	0.12	−0.1429	0.76	−0.3610	0.191
	R + L	−0.5952	0.12	−0.4286	0.34	−0.5344	0.04
Neuronal density	R	−0.2857	0.49	−0.3214	0.48	−0.2288	0.41
	L	0	1.00	0.3214	0.48	−0.1501	0.59
	R + L	−0.0714	0.87	0.1429	0.76	−0.0340	0.90

Side: R= right; L= left