Table 3.
Cox regression analyses for association between BP level and stroke in population without antihypertensive treatments (n = 3118) (Forward Stepwise)
| Variable | HR | 95%CI | P-Value |
|---|---|---|---|
| Model 1 | |||
| BP level | 0.047a | ||
| normal | reference | ||
| elevated | 0.90 | 0.32–2.54 | 0.844 |
| stage1 | 0.98 | 0.46–2.05 | 0.947 |
| stage2 | 1.90 | 1.01–3.58 | 0.047 |
| Age | 1.06 | 1.03–1.08 | < 0.001 |
| Current drinking | 1.86 | 1.13–3.04 | 0.014 |
| Model 2 | |||
| SBP (per SD) | 1.51 | 1.24–1.84 | < 0.001 |
| Age | 1.05 | 1.03–1.08 | < 0.001 |
| Current drinking | 1.88 | 1.15–3.08 | 0.012 |
| Model 3 | |||
| SBP (per 20 mmHg) | 1.46 | 1.21–1.76 | < 0.001 |
| Age | 1.05 | 1.03–1.07 | < 0.001 |
| Current drinking | 1.88 | 1.15–3.08 | 0.012 |
Abbreviations: HR Hazard Ratios, CI confidence interval
All the variables included in the analysis start including age, sex, ethnicity, education level, current smoking, current drinking, BMI, labor strength, dyslipidemia, diabetes, atrial fibrillation, coronary heart disease and antihypertensive medication
arepresent the correct global p-value for the BP categorical variable included in the Cox model
Model 1: the independent variable is BP level
Model 2: the independent variable is SBP (per SD)/DBP (per SD)
Model 3: the independent variable is SBP (per 20 mmHg)/DBP (per 20 mmHg)