Table 10. Multivariate Cox proportional hazard regression analysis on the association of BMI, WC, WHR and WHtR with hypertension incidence.
| Indicator | Quartile | Numbers of participants | Hypertension | Cox analysisa | |||
| Cases | Incidence/% | HR | 95%CI | ||||
| BMI: indicates body mass index; WC: waist circumference; WHR: waist to hip ratio; WHtR: waist to height ratio. aAdjustment for sex, age, education, occupation, family annual income per capita, smoking and alcohol drinking. | |||||||
| BMI/kg/m2 | Lowest (< 20.4) | 632 | 128 | 20.25 | 1.00 | ||
| Second (20.4-22.3) | 633 | 147 | 23.22 | 1.28 | 0.92–1.77 | ||
| Third (22.4-24.4) | 633 | 160 | 25.28 | 1.46 | 1.06–2.02 | ||
| Highest (≥ 24.5) | 633 | 218 | 34.44 | 2.42 | 1.80–3.26 | ||
| WC/cm | Lowest (< 69.1) | 649 | 114 | 17.57 | 1.00 | ||
| Second (69.1-74.6) | 623 | 148 | 23.76 | 1.26 | 0.87–1.83 | ||
| Third (74.7-80.5) | 626 | 164 | 26.20 | 1.63 | 1.14–2.33 | ||
| Highest (≥ 80.6) | 633 | 227 | 35.86 | 2.51 | 1.82–3.46 | ||
| WHR | Lowest (< 0.43) | 633 | 120 | 18.96 | 1.00 | ||
| Second (0.43-0.47) | 631 | 133 | 21.08 | 1.18 | 0.82–1.70 | ||
| Third (0.48-0.51) | 635 | 175 | 27.56 | 1.70 | 1.20–2.39 | ||
| Highest (≥ 0.52) | 632 | 225 | 35.60 | 2.62 | 1.90–3.61 | ||
| WHtR | Lowest (< 0.79) | 421 | 106 | 25.18 | 1.00 | ||
| Second (0.79–0.83) | 421 | 121 | 28.74 | 1.15 | 0.77–1.70 | ||
| Third (0.84-0.88) | 422 | 151 | 35.78 | 1.91 | 1.33–2.75 | ||
| Highest (≥ 0.89) | 420 | 154 | 36.67 | 2.08 | 1.46–2.96 | ||