Table 2.
Rates and relative risks of heart failure according to categories of time-varying SB.
| Total Sedentary Behavior (hr/d) | Trend | |||
|---|---|---|---|---|
| ≤6.5 | 6.6–9.5 | >9.5 | P-value | |
| Total SB (hr/d) median | 5.0 | 8.0 | 12.0 | |
| Cases | 470 | 426 | 506 | |
| Crude rate* | 1.9 | 2.2 | 2.4 | |
| Model 1, HR (95% CI) | 1.00 (ref) | 1.15 (1.01, 1.31) | 1.42 (1.25, 1.61) | <.001 |
| Model 2, HR (95% CI) | 1.00 (ref) | 1.11 (0.97, 1.27) | 1.29 (1.14, 1.47) | <.001 |
| Model 3, HR (95% CI) | 1.00 (ref) | 1.11 (0.97, 1.26) | 1.27 (1.11, 1.44) | <.001 |
| Model 4, HR (95% CI) | 1.00 (ref) | 1.10 (0.96, 1.25) | 1.24 (1.09, 1.41) | <.001 |
| Sitting Time (hr/d) | ||||
| ≤4.5 | 4.6–8.5 | >8.5 | ||
| Sitting time (hr/d) median | 4.5 | 6.5 | 10.5 | |
| Cases | 488 | 595 | 319 | |
| Crude rate* | 1.9 | 2.3 | 2.4 | |
| Model 1, HR (95% CI) | 1.00 (ref) | 1.14 (1.01, 1.28) | 1.54 (1.34, 1.78) | <.001 |
| Model 2, HR (95% CI) | 1.00 (ref) | 1.09 (0.97, 1.23) | 1.39 (1.20, 1.60) | <.001 |
| Model 3, HR (95% CI) | 1.00 (ref) | 1.09 (0.97, 1.23) | 1.37 (1.19, 1.58) | <.001 |
| Model 4, HR (95% CI) | 1.00 (ref) | 1.08 (0.95, 1.21) | 1.33 (1.15, 1.54) | <.001 |
HR, hazard ratio; CI, confidence interval.
Crude rate, HF cases per 1,000 person years.
Model 1 includes age (years), race-ethnicity (6 categories), education (3 categories), income (4 categories) smoking (never, past, current), alcohol consumption (never, past, current), hormone therapy use (never, past, current), history of hysterectomy.
Model 2 includes above factors and BMI (kg/m2), systolic and diastolic BP (mmHg), physical function score (continuous), history of treated diabetes and hypertension, and history of atrial fibrillation.
Model 3 includes above factors and time-varying CHD (myocardial infarction, coronary revascularization procedures).
Model 4 includes above factors and self-reported baseline total recreational physical activity (MET-hr/wk).