Table 3. Hazard ratios of incident hypertension according to changes in total physical activity.
| Variables | Stayed Sedentary
(n= 482) |
Became Active
(n= 734) |
Became Sedentary
(n = 729) |
Stayed Active
(n= 3,026) |
| Model 1: adjusted for age, gender, BMI, region, area, and baseline total MET. Model 2: adjusted for covariates in model 1 plus educational level, smoking status, alcohol drinking status, blood glucose level, total cholesterol level. Model 3: adjusted for covariates in model 2 plus baseline SBP. *P < 0.05 vs. the stayed sedentary group. **P < 0.01 vs. the stayed sedentary group. BMI: body mass index; MET: metabolic equivalents; SBP: systolic blood pressure. | ||||
| Cases | 122 | 180 | 205 | 753 |
| Person-years | 2,566.72 | 4,125.83 | 3,834.62 | 16,250.84 |
| Incidence rate (per 1000 person-years) | 47.53 | 43.63 | 53.46 | 46.34 |
| HR (95% CI) | ||||
| Model 1 | 1.00 | 0.69 (0.54−0.88)** | 0.96 (0.76−1.21) | 0.73 (0.59−0.92)** |
| Model 2 | 1.00 | 0.73 (0.57−0.94)* | 0.96 (0.75−1.22) | 0.71 (0.56−0.89)** |
| Model 3 | 1.00 | 0.75 (0.58−0.96)* | 0.98 (0.77−1.25) | 0.75 (0.60−0.95)* |