Population and Expected Deaths of
Community A by Age, and Standard Death Rates by Age
| Age (year) |
Population in A |
Standard death rate
(per 1,000) |
Expected deaths in A
at standard rates |
| Under1 |
1,000 |
20.0 |
20.0 |
| 1-14 |
3,000 |
0.5 |
1.5 |
| 15-34 |
6,000 |
1.0 |
6.0 |
| 35-54 |
13,000 |
5.0 |
65.0 |
| 55-64 |
7,000 |
20.0 |
140.0 |
| Over 64 |
20,000 |
90.0 |
1,800.0 |
| Total |
50,000 |
17.4 |
2,032.5 |
|
As shown, 2032.5 deaths would have been expected in community
A had their age-specific death rates been identical to those for
community B. However, 1781 deaths were actually observed.
The SMR is calculated by dividing the observed number of
deaths by the number expected (SMR = 1781/2032.5 = 0.876),
indicating that after adjusting for age, the mortality experience
in these two communities is quite similar.
SMRA =
1781/2032.5 =
0.876
SMRB= 1.0
|
