. 2022 Jan 28;19(1):71–82. doi: 10.11909/j.issn.1671-5411.2022.01.002

Table 5. Multiple logistics regression analysis for relationship between SOD and blood pressure stratified by gender, overweight, category of residence and CVD diseases.

Subgroup	DBP ≥ 90 mmHg			SBP ≥ 140 mmHg
Subgroup	OR (95%CI)	P	Interaction P	OR (95%CI)	P	Interaction P
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; CRP: C-reactive protein; DBP: diastolic blood pressure; HDLC: high-density lipoprotein cholesterol; LDLC: low-density lipoprotein cholesterol; SBP: systolic blood pressure; SOD: superoxide dismutase.
Gender
Male	0.977 (0.960, 0.944)	0.007	0.1327	1.008 (0.994, 1.024)	0.264	0.1081
Female	0.991 (0.973, 1.009)	0.310	0.1327	0.994 (0.978, 1.010)	0.450	0.1081
BMI, kg/cm²
BMI < 25 (normal)	0.980 (0.967, 0.993)	0.003	0.1422	1.002 (0.991, 1.014)	0.695	0.4460
BMI ≥ 25 (overweight)	1.004 (0.975, 1.034)	0.798	0.1422	0.989 (0.961, 1.017)	0.436	0.4460
Waist circumference, cm
Normal male < 90 yrs; female < 85 yrs	0.982 (0.968, 0.996)	0.012	0.3095	1.008 (0.995, 1.020)	0.217	0.0695
Overweight male ≥ 90 yrs; female ≥ 85 yrs	0.996 (0.972, 1.020)	0.720	0.3095	0.981 (0.958, 1.004)	0.109	0.0695
Category of residence
City and town	1.006 (0.978, 1.035)	0.660	0.1282	0.987 (0.961, 1.014)	0.342	0.1940
Rural	0.980 (0.967, 0.994)	0.005	0.1282	1.005 (0.993, 1.017)	0.448	0.1940
Suffering from disease (CVDs)
Heart disease	0.979 (0.941, 1.018)	0.284	0.9642	0.981 (0.941, 1.022)	0.351	0.1589
No heart disease	0.984 (0.972, 0.997)	0.016	0.9642	1.004 (0.992, 1.015)	0.517	0.1589
Stroke	0.963 (0.922, 1.005)	0.084	0.7128	1.007 (0.970, 1.046)	0.703	0.9855
No stroke	0.985 (0.972, 0.997)	0.016	0.7128	1.006 (0.995, 1.017)	0.311	0.9855
Diabetes	0.946 (0.832, 1.075)	0.396	0.1621	0.965 (0.851, 1.093)	0.572	0.9429
No diabetes	0.984 (0.972, 0.996)	0.007	0.1621	1.006 (0.995, 1.017)	0.277	0.9429
SOD
SOD < 58, IU/mL	0.965 (0.943, 0.988)	0.020	0.0050	1.000 (0.978, 1.023)	0.988	0.7625
SOD > 58 IU/mL	1.012 (0.989, 1.035)	0.322	0.0050	1.006 (0.986, 1.027)	0.628	0.7625