Table 3. Multiple Logistic Regression Analysis for Relationship between SOD and High BP (DBP ≥ 90 mmHg or SBP ≥ 140 mmHg).

Variables	DBP ≥ 90 mmHg			SBP ≥ 140 mmHg
	OR (95% CI)	P-value		OR (95% CI)	P-value
Crude: not adjusted; model 1: adjusted for age and gender; model 2: adjusted for age, gender, current status of smoke, alcohol drinking and exercise; model 3: adjusted for age, gender, current status of smoke, alcohol drinking, exercise and disease history (diabetes, stroke, and heart disease); model 4: Adjusted for age, gender, current status of smoke, alcohol drinking, exercise, disease history (diabetes, stroke and heart disease), BMI and blood biomarkers (total cholesterol, LDLC, HDLC, hs-CRP, creatine and plasma glucose). BMI: body mass index; BP: blood pressure; CRP: C-reactive protein; HDLC: high-density lipoprotein cholesterol; HR: heart rate; LDLC: low-density lipoprotein cholesterol; SOD: superoxide dismutase.
Crude	0.981 (0.970, 0.993)	0.001		0.976 (0.943, 1.010)	0.354
Model 1	0.983 (0.971, 0.994)	0.003		0.999 (0.989, 1.010)	0.872
Model 2	0.983 (0.971, 0.994)	0.003		0.978 (0.944, 1,012)	0.884
Model 3	0.983 (0.971, 0.994)	0.004		1.000 (0.989, 1.010)	0.936
Model 4	0.984 (0.973, 0.996)	0.010		1.001 (0.990, 1.012)	0.836