Table 2.
Hazard Ratios of Associations Between BMI and Atrial Fibrillation Estimated With Conventional Cox Models
| Model | Nonobese vs Obese | 5 kg/m2 Decrease in BMI |
|---|---|---|
| 10 y | ||
| All covariates at baseline | 0.85 (0.72–1.00) | 0.93 (0.86–1.00) |
| Time‐varying obesity/BMI and other covariates at baseline | 0.83 (0.71–0.97) | 0.90 (0.84–0.97) |
| All time‐varying covariates | 0.82 (0.70–0.96) | 0.90 (0.84–0.96) |
| 20 y | ||
| All covariates at baseline | 0.75 (0.63–0.88) | 0.88 (0.81–0.95) |
| Time‐varying obesity/BMI and other covariates at baseline | 0.82 (0.71–0.95) | 0.88 (0.82–0.94) |
| All time‐varying covariates | 0.83 (0.72–0.97) | 0.88 (0.82–0.95) |
Data are adjusted hazard ratios and 95% CIs. Cox models are adjusted for SBP, DBP, current smoking status, use of hypertension medication, diabetes mellitus status, history of heart failure, and history of myocardial infarction. We note that results for a 5 kg/m2 decrease in BMI represent average results for a shift in BMI, and not necessarily an individual's change over time. BMI indicates body mass index; DBP, diastolic blood pressure; SBP, systolic blood pressure.