To understand the correlation between physical activity and the relative risk of premature death, let's examine the given data systematically:
1. 30 Minutes per Week:
- Relative Risk: 1
- Interpretation: This is our baseline. A relative risk of 1 means there is no reduction in risk for this amount of activity.
2. 90 Minutes per Week:
- Relative Risk: 0.8
- Interpretation: Doing 90 minutes of physical activity per week reduces the relative risk of premature death to 0.8. This means there is a 20% reduction in risk compared to the baseline.
3. 180 Minutes per Week:
- Relative Risk: 0.73
- Interpretation: Increasing physical activity to 180 minutes per week further reduces the relative risk to 0.73, reflecting a 27% reduction in risk compared to the baseline.
4. 330 Minutes per Week:
- Relative Risk: 0.64
- Interpretation: With 330 minutes per week, the relative risk decreases to 0.64, indicating a 36% reduction in risk relative to the baseline.
5. 420 Minutes per Week:
- Relative Risk: 0.615
- Interpretation: At 420 minutes of activity per week, the relative risk is 0.615, which means there is a 38.5% reduction in risk compared to the baseline.
By analyzing these points, we can clearly observe a pattern:
- As the minutes per week dedicated to moderate to vigorous physical activity increase, the relative risk of dying prematurely decreases.
Therefore, we can conclude that:
The risk of dying prematurely declines as people become more physically active.
This conclusion matches the third statement from the given options.
