EPIDEMIOLOGICAL WORKSHEET #1

What is the heart disease death rate for the East North Central region?

Heart disease death rate

number of deaths from heart disease__ X 100,000

total population of persons

=130,141/43,185,930×100,000

=301.350/ 100,000 population

3. What is the proportionate mortality rate for heart disease in the East North Central region?

the proportionate mortality

Number of deaths due to heart disease during a given time interval X 1000

Total number of deaths from all causes during the same time interval130,141

=130,141/390,444×1000

=333.315/ 1000 population

Proportionate mortality= Number of deaths assigned to a specific cause during a given time interval 1000

Total number of deaths from all causes during the same time interval

Bonus Question: Can you tell by looking at the data if there is another region similar to the East North Central region?

Yes. United States is similar to East North Central region but proper calculation is required to be sure. The variance is very little and negligible

Part II: Data Analysis

Below is some sample data that allows you to simply calculate some basic rates.

Table 2. Preliminary Data for Unintentional Injuries

Total injuries

Fatal

injuries

Non-fatal injuries

# in population

Total deaths – All causes

Male

41

2

39

2,981

8

Female

73

3

70

2, 856

9

What is the crude mortality rate per 100,000 population?

Crude Death Rate (CDR) =___number of deaths during time period____ X 100,000

total population at mid-point of time period

17/5837×100,00=291.245/100,000

What is the cause specific mortality rate for injuries?

Cause – specific Death Rate=_number of deaths from a specified cause during time period_X100,000

Total population at mid-point of time period

5/5837×100, 000=85.66/100,000

What is the case fatality rate (%) for injuries?

Cause – specific Death Rate=_Number case fatality X100

Total number of injury cases

2/41×100=4.878%

Wise RP, Livengood JR, Berkelman RL, Goodman RA, (1988). Methodologic alternatives for measuring premature mortality. Am J Prev Med;4:268–273.

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