Interval 0—starting at current age | Interval t-1 | Interval t | |
---|---|---|---|
Risk of CVD event in age interval | 0 | a_{t−1} | a_{t} |
Risk of non-CVD death in age interval | 0 | b_{t−1} | b_{t} |
Proportion of original cohort having non-CVD death in interval | 0 | c_{t−1} | c_{t}=e_{t−1} x b_{t} |
Proportion of original cohort having CVD event in interval | 0 | d_{t−1} | d_{t}=e_{t−1} x a_{t} |
Proportion surviving free of CVD at end of interval | 1 | e_{t−1} | e_{t}=e_{t−1}−c_{t} −d_{t} |
Cumulative proportion with CVD events by end of interval | 0 | f_{t−1} | f_{t}=e_{t−1}+d_{t} |
Cumulative proportion dying from non-CVD causes by end of interval | 0 | m_{t−1} | m_{t}=m_{t−1}+c_{t} |
Note that e_{t}+f_{t}+m_{t}=1 for all t.
CVD, cardiovascular disease.