Nutrition and Coronary Heart Disease
TABLE 4: LOWER BOUND, MIDPOINT AND UPPER BOUNDS OF EFFECTIVENESS FOR EACH
INTERVENTION.
|
INTERVENTION |
YEARS OF EFFECTIVENESS | ||
|
Lower Bound (years) |
Mid-Point (years) |
Upper bound (years) | |
|
-ɑp |
4 |
53 |
T |
|
Community |
2 |
3.5 |
5 |
|
Mass Media |
1 |
2 |
3 |
|
HospitaVRehab |
______________2 |
____________3.5 |
_____________5_ |
These assumptions will provide an upper and lower bound for the sensitivity analysis.
The sensitivity analysis will scrutinise the assumptions made above and test whether
varying the time span of a strategy will affect its cost-effectiveness ranking.
Effectiveness of the interventions
Through an examination of prevalence rates within the target groups, the number of
CHD events for each of the sub-groups can be estimated. Table 5 provides SWSAHS
population figures and the expected number of CHD deaths over one year. The figures
in Table 5 are for people in the 25 to 75 age group. Note that approximately 18 % of
CHD occur outside this age group. The table is compiled from a range of
epidemiological profiles, relative risk measures and CHD death statistics for the
SWSAHS. See Appendix C for a more detailed discussion on these figures.
CHERE Project Report IJ- November 1999
22
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