Table 3.

Multiple log-linear Tobit regression analysis of Hg levels in hair and urine

Biological sample	Predictor variable	Pseudo R2	β	p-value	CI 95%
Hair	Groups (ASD)	0,03	−5.02	0,19	−12.67; 2.63
	Gender (girls)		3.96	0,12	−1.11; 9,1
	Age (per month increase)		−0,03	0,62	−0,16; 0,09
Urine	Groups (ASD)	0,05	−0.17	0,62	−4,97; 1,87
	Gender (girls)		0,24	0,31	−2,56; 1,04
	Age (per month increase)		−0,01	0,11	−0,002; 0,07

ASD Autism spectrum disorders, CI confidence interval