Table 2.
Multivariate Cox regression analysis for the associations between BMI change trajectories and hypertension by sex.
| BMI change trajectories | Case/N | Unadjusted modelb | Adjusted modelc | ||
|---|---|---|---|---|---|
| HR (95% CI)a | p value | HR (95% CI)a | p value | ||
| Male | |||||
| Loss | 139/388 | 1.10 (0.92–1.31) | 0.287 | 0.74 (0.62–0.89) | 0.002 |
| Stable | 1064/2795 | Ref. | Ref. | ||
| Moderate gain | 1121/2789 | 1.00 (0.92–1.09) | 0.991 | 1.23 (1.13–1.34) | < 0.001 |
| Substantial gain | 363/855 | 1.08 (0.96–1.21) | 0.224 | 1.65 (1.45–1.86) | < 0.001 |
| Female | |||||
| Loss | 259/744 | 1.28 (1.11–1.46) | < 0.001 | 0.87 (0.75–1.00) | 0.053 |
| Stable | 1044/3487 | Ref | Ref | ||
| Moderate gain | 924/2643 | 1.03 (0.94–1.12) | 0.582 | 1.28 (1.17–1.40) | < 0.001 |
| Substantial gain | 224/561 | 1.24 (1.07–1.43) | 0.003 | 1.83 (1.58–2.12) | < 0.001 |
aHR hazard ration, CI confidence interval.
bUndjusted model is crude model without any covariates.
cAdjusted model adjusted variables including age, survey wave, initial BMI, initial SBP/DBP, change of PA and dietary energy intake, change of smoking and drinking status.