Table 3.

Odds ratios for hypertension and serum selenium, serum copper and serum zinc levels adjusted for confounding factors. High and low values refer to normal lab range values for trace elements

	Analysis of Maximum Likelihood Estimates			Odds Ratio Estimates
	Standard Error	Wald Chi-Square	Pr > ChiSq	Point Estimate	95% Confidence Limits
High Serum Selenium (>150μg/L)	0.13	17.12	< 0.01	1.69*	1.32	2.17
High Normal Serum Selenium (>120μg/L)	0.07	33.54	< 0.01	1.46*	1.29	1.66
High Serum Copper (>145μg/dL)	0.09	0.34	0.68	0.95	0.79	1.14
High Serum Zinc (>105μg/dL)	0.13	0.23	0.33	1.06	0.83	1.37
Low Serum Copper (<75μg/dL)	0.2	0.02	0.89	1.027	0.7	1.5
Low Serum Zinc(<65μg/dL)	0.09	0.11	0.89	1.21	1.04	1.43
Serum Selenium(Q1)	0.04	44.2	< 0.01	0.63*	0.55	0.72
Serum Selenium(Q4)	0.03	18.42	< 0.01	1.34*	1.17	1.53

Q1 lowest quantile, Q4 highest quantile. *Significant at p < 0.01