Table 2.
Multivariate linear regression for association between blood pressure and QTc interval (ms).
| Group | Model 1 | Model 2 | Model 3 | |||
|---|---|---|---|---|---|---|
| β (95% CI) | P value | β (95% CI) | P value | β (95% CI) | P value | |
| Total | ||||||
| SBP, mmHg | 0.23 (0.21–0.25) | < 0.001 | 0.14 (0.12–0.16) | < 0.001 | 0.12 (0.10–0.14) | < 0.001 |
| DBP, mmHg | 0.46 (0.42–0.50) | < 0.001 | 0.20 (0.16–0.24) | < 0.001 | 0.16 (0.12–0.20) | < 0.001 |
| Male | ||||||
| SBP, mmHg | 0.28 (0.25–0.31) | < 0.001 | 0.19 (0.16–0.21) | < 0.001 | 0.16 (0.13–0.19) | < 0.001 |
| DBP, mmHg | 0.56 (0.51–0.62) | < 0.001 | 0.25 (0.20–0.30) | < 0.001 | 0.20 (0.14–0.25) | < 0.001 |
| Female | ||||||
| SBP, mmHg | 0.19 (0.16–0.22) | < 0.001 | 0.11 (0.09–0.14) | < 0.001 | 0.09 (0.07–0.12) | < 0.001 |
| DBP, mmHg | 0.37 (0.32–0.42) | < 0.001 | 0.15 (0.10–0.20) | < 0.001 | 0.12 (0.07–0.17) | < 0.001 |
Abbreviations as in Table 1.
Note. Model 1: adjusted for age, gender, race, SBP, and DBP; Model 2: additional adjustments for BMI, FBG, TC, TG, LDL-C, HDL-C, SUA, current smoking, drinking status, serum calcium, potassium and magnesium, heart rate, history of heart disease, and any medication used; Model 3: additional adjustments for LVMI.