Table 1.

Association between trace metals and BMI

	BMI
	Univariate analysis				Multivariate analysis
	Obese		Combined		Combined
	r2	p	r2	p	β	p
Gender	−0.016	0.69	0.022	0.06	0.849	0.77
Age	0.035	0.09	0.006	0.20	0.043	0.66
Ethnicity	−0.014	0.63	−0.006	0.60	−1.425	0.57
Mn	−0.017	0.77	−0.009	0.99	−0.330	0.64
Zn	−0.002	0.34	0.041	0.02	0.004	0.61
Fe	−0.018	0.80	0.041	0.02	0.001	0.15
Cu	0.0700	0.03	0.150	<0.0001	0.017	0.001