Each of the following statements suggests a common epidemiologic measure that co
ID: 123573 • Letter: E
Question
Each of the following statements suggests a common epidemiologic measure that could be calculated if all the data had been supplied in the statement. For each of these statements indicate what measure of morbidity or mortality is most likely being suggested and indicate the reasons for your answer.
a. Twelve cases of rabies were reported for the first time in Asheville this year.
b. Ten percent of all deaths are caused by fatal motor vehicular accidents in Summit County.
c. Last year 21 deaths occurred in Culver City from accidental drowning.
d. Sixty percent of the population of Orion has had the flu in the last two years.
e. Of the 45 cases of hemorrhagic stroke admitted to Community Memorial Hospital last year, 12 died within two days of admission.
f. On March 1, 15 students at Gateway Middle School had pertussis while 120 did not.
Explanation / Answer
a ans-Incidence rate measure of identifying risk factor for specific disease in outbreak investigation.
number of new cases of disease over a time interval / average population of risk during the time interval * 10n
b- ans-Proportional mortality Rate-express the number of death due to particular cause per 100 or 1000 total death.
no.of death from the specific disease in a year / total death from all causes in that year * 100
c-Cause Specific Mortality rate-useful to analysis the death by cause
no of deaths attributed to a specific cause / population at the midpoint of the time period * 100000
d-ans-Crude death rate
crude death rate can be calculated by total number of deaths to residents in a specified geographic area / total population for the same geographic area * 1000
Crude death rate are actual summery measure of occurance for a defined population and are readily calculable
e ans-Case Fatality Rate
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