Question

During the calendar year of 1971 a total of 171 deaths were caused by influenza in a city of 450,000 persons. The temporal distribution of these deaths was as follows: First Quarter, 54; Second Quarter, 43; Third Quarter, 35; and Fourth Quarter, 39. Calculate the annual and quarterly mortality rates per 100,000 population.

Answer 1

Answer and Step-by-step explanation:

The computation of annual and quarterly mortality rates per 100,000 population is shown below:-

Quarterly mortality rates are

`= (Deaths)/(Population\ in\ the\ city)* Population`

For the first quarter

`= (54)/(450,000)* 100,000`

= 12 death per 100,000 population

For the second quarter

`= (43)/(450,000)* 100,000`

= 9.5 death per 100,000 population

For the third quarter

`= (35)/(450,000)* 100,000`

= 7.7 death per 100,000 population

For the fourth quarter

`= (39)/(450,000)* 100,000`

= 8.6 death per 100,000 population

Now the annual mortality is

`= (Deaths)/(Population\ in\ the\ city)* Population`

`= (171)/(450,000)* 100,000`

= 38 death per 100,000 population