prev next front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |20 |21 |22 |23 |review
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