Table 2.

Linear regression model showing the relationship between ln (glucose) and ln (Se) in Ziyang and Ningshan.

	Ziyang (n = 2797)					Ningshan (n = 2889)
	Unstandardized coefficients		Stand. coefficient			Unstandardized coefficients		Stand. coefficient
	B	Std Error	Beta	T	p-value	B	Std Error	Beta	T	p-value
Constanta	1.193	0.144	–	8.266	<0.001	-1.271	0.156	–	-8.135	<0.001
Se (μg/l)	0.030	0.013	0.045	2.371	0.018	0.529	0.012	0.619	42.718	<0.001
BMI (kg/m2)	0.070	0.042	0.031	1.671	0.095	0.101	0.047	0.031	2.124	0.034
Age (y)	0.002	0.000	0.086	4.522	<0.001	0.004	0.001	0.112	7.627	<0.001
Gender (%male)	0.005	0.011	0.008	0.419	0.675	0.019	0.013	0.021	1.432	0.152

^aThe linear regression model for ln (glucose) contained the ln (selenium), ln (BMI), age and gender as independent variables.