TABLE 2.

Multiple linear regression results.

Dependent	Partial r (Hg concentration)/	Partial r (age)/	R2/p-value
variable	p-value	p-value
Riverines
Visual perimetry	0.56/0.04	0.04/0.87	0.46/0.1
Color vision	−0.08/0.33	−0.09/0.47	0.82/0.06
Gold-miners
Visual perimetry	0.06/0.97	−0.25/0.16	0.06/0.12
Color vision	0.53/0.21	0.08/0.09	0.05/0.16

R² = coefficient of multiple determination, r = coefficient of regression.