Introduction to Epidemiology 6th Edition by Ray M Merrill

Exercise 2

Table 1 gives the mortality statistics for a fictitious county in a rural state for the period from July 1–June 30 (1 year). After reviewing the health status indicators and mortality data, calculate the following mortality rates.

a. Crude mortality rate

b. Maternal mortality rate

c. Infant mortality rate

d. Neonatal mortality rate

e. Fetal death rate

f. Fertility rate

g. Age-specific mortality rate for persons ages 55 years or older

h. Cause-specific mortality rate for those who died from heart disease

i. Cause-specific mortality rate for those who died from stroke

j. PMR for cancer among persons ages 55 years or older

k. Postneonatal mortality rate

Table 1 Selected Statistics for a Hypothetical Population, July 1 to June 30

Total 1-year population	160,000
Population of women 15–49 years of age	40,000
Population of 55 years of age and older	44,000
Number of live births	3,300
Number of fetal deaths	66
Number of maternal deaths	5
Total deaths	1,444
Number of infant deaths 0-1 years of age	88
Number of deaths under 28 days old	4
Number of deaths between 28 days and 1 year	8
Number of deaths of persons 55 years and older	848
Number one cause of death in the county is heart disease—deaths from heart disease	133
Number two cause of death in the county is from cancer—deaths from cancer	66
Number three cause of death in the county is from cerebrovascular accident (stroke)	56
Number four cause of death in the county is accidents	45
Number of deaths from cancer age 55 years and older	44
Number of persons diagnosed with heart disease	5,600
Number of deaths from other causes	504
Number of persons diagnosed with high blood pressure, arteriosclerosis, and atherosclerosis (precursors for a stroke)	1,200

Step 1 of 11

a.

The most basic and common is crude mortality rate. This mortality rate can be calculated by the use of a formula which is described below:

According to the give data, crude mortality rate can be calculated as follows: