TABLE 4.

Parameter Estimates for Supervised Regression Model for Serum BDNF Concentration in Cord Blood

Estimate	Metric	Standard	p	Description
R2	0.103		< 0.001	Proportion of global variance explained by the model
b0	8.615		< 0.001	Expected value when all predictors are absent
b1	0.711	0.145	0.037	Effect of the gestational age
b2	−0.036	−0.010	0.233	Effect of the exposure to MeHg in utero
b3	2.126	0.138	0.002	Effect of the maternal smoking
b4	−0.015	−0.085	0.512	Effect of combined exposure to maternal smoking and MeHg in utero

Note. Metric values are the actual estimates produced by linear fitting of the model, whereas standard values depict the actual influence of each variable included in the model (i.e., SD change in the outcome induced by 1 SD change in individual predictor variable). Model description: