Table 2. Logistic regression analysis of factors associated with behavioral problems in children.

Variables	OR (95% CI)	P value
Age	1.00 (0.96–1.04)	0.99
Sex
Male	Ref.
Female	1.07 (0.89–1.28)	0.48
BMI	0.99 (0.96–1.01)	0.33
Magnesium (log10-transformed)	0.40 (0.05–3.38)	0.40
Iron (log10-transformed)	0.06 (0.01–0.39)	0.003
Copper (log10-transformed)	1.40 (0.40–4.86)	0.60
Zinc (log10-transformed)	0.68 (0.19–2.47)	0.56
Lead (log10-transformed)	2.26 (1.51–3.37)	<0.001
Calcium	0.77 (0.25–2.35)	0.64
Phosphorus	1.11 (0.65–1.90)	0.70
Triglycerides (log10-transformed)	1.77 (1.10–2.82)	0.02
Vitamin D	1.00 (0.99–1.00)	0.25

BMI, body mass index; CI, confidence interval; OR, odds ratio; Ref., reference.