Table 4.
All‐Cause, CHD, and CVD Mortality in Relation to Continuous Change in PA, Sitting Time, and Walking Following MI, Stratified by Pre‐MI Levels of PA, Sitting Time, and Walking
| Age‐Adjusted | Multivariable‐Adjusteda | |
|---|---|---|
| Pre‐MI PA | HR (95% CI) for a 1 MET‐h/week increase in PA | |
| All‐cause mortality | ||
| ≥7.5 MET‐h/week | 0.98 (0.97–1.00) | 0.99 (0.97–1.01) |
| <7.5 MET‐h/week | 0.92 (0.89–0.96) | 0.92 (0.88–0.96) |
| CHD mortality | ||
| ≥7.5 MET‐h/week | 0.94 (0.90–0.97) | 0.92 (0.87–0.98) |
| <7.5 MET‐h/week | 0.88 (0.81–0.96) | 0.84 (0.76–0.93) |
| CVD mortality | ||
| ≥7.5 MET‐h/week | 0.98 (0.95–1.00) | 0.98 (0.95–1.01) |
| <7.5 MET‐h/week | 0.91 (0.87–0.96) | 0.91 (0.86–0.96) |
| Pre‐MI sitting time | HR (95% CI) for a 1 h/day increase in sitting time | |
| All‐cause mortality | ||
| ≥8 h/day | 1.11 (0.99–1.24) | 1.14 (0.97–1.35) |
| <8 h/day | 1.11 (1.04–1.19) | 1.09 (1.01–1.19) |
| CHD mortality | ||
| ≥8 h/day | 1.08 (0.89–1.33) | 1.16 (0.79–1.69)b |
| <8 h/day | 1.01 (0.86–1.19) | 1.05 (0.87–1.28)b |
| CVD mortality | ||
| ≥8 h/day | 1.08 (0.92–1.28) | 1.05 (0.62–1.79)c |
| <8 h/day | 1.13 (0.99–1.22) | 1.07 (0.94–1.21) |
| Pre‐MI walking | HR (95% CI) for a 1 MET‐h/week increase in walking | |
| All‐cause mortality | ||
| ≥3.5 MET‐h/week | 1.02 (0.96–1.08) | 1.03 (0.95–1.11) |
| <3.5 MET‐h/week | 0.85 (0.77–0.94) | 0.81 (0.72–0.91) |
| CHD mortality | ||
| ≥3.5 MET‐h/week | 1.05 (0.94–1.18) | 1.17 (0.85–1.60)c |
| <3.5 MET‐h/week | 0.68 (0.53–0.88) | 0.65 (0.45–0.94) |
| CVD mortality | ||
| ≥3.5 MET‐h/week | 1.06 (0.97–1.16) | 1.05 (0.93–1.23) |
| <3.5 MET‐h/week | 0.73 (0.61–0.87) | 0.66 (0.52–0.83) |
CHD indicates coronary heart disease; CVD, cardiovascular disease; HR, hazard ratio; MET‐h, metabolic equivalent of task hours; MI, myocardial infarction; PA, physical activity.
Adjusted for age, education, race, income (updated), marital status (updated), hormone replacement therapy use, physical function, congestive heart failure (updated), depression, family history MI, cigarette smoking (updated), sleep, alcohol drinks per week, age at menopause, Healthy Eating Index 2005, PA (sitting time), sitting time (PA), and vigorous PA (walking).
Because of model convergence criterion, we used a reduced model: adjusted for age, education, race, physical function, congestive heart failure (updated), cigarette smoking (updated), and PA (sitting time).
model convergence criterion, we used a reduced model: adjusted for age, education, race, income (updated), marital status (updated), hormone replacement therapy use, physical function, congestive heart failure (updated), depression, family history MI, cigarette smoking (updated), age at menopause, Healthy Eating Index 2005, and vigorous PA (walking).