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Old 06-06-2014
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Help NBME 13 Epidemiology Q.

does annual mortality rate equals case fatality rate?
and if it does so, why the answer is NOT B then, since
40000 equal the people who died from the disease / 100000 that is the population. i picked B and it was wrong, i cannot find a proper explanation so someone please help!! thanks

A retrospective study is conducted to assess the incidence and outcome of subarachnoid hemorrhage in a midwestern state.
The annual incidence of this condition is 15 per 100,000 people, and the case fatality rate is 40%. Based on these data, which of the following represents the annual mortality rate for subarachnoid hemorrhage per 100,000 people in this state?

A) 0.4 x 15
B) 0.4 x 100,000
C) 0.6 x 15
D) 0.6 x 100,000
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Old 06-06-2014
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Originally Posted by drpisho View Post
does annual mortality rate equals case fatality rate?
and if it does so, why the answer is NOT B then, since
40000 equal the people who died from the disease / 100000 that is the population. i picked B and it was wrong, i cannot find a proper explanation so someone please help!! thanks

A retrospective study is conducted to assess the incidence and outcome of subarachnoid hemorrhage in a midwestern state.
The annual incidence of this condition is 15 per 100,000 people, and the case fatality rate is 40%. Based on these data, which of the following represents the annual mortality rate for subarachnoid hemorrhage per 100,000 people in this state?

A) 0.4 x 15
B) 0.4 x 100,000
C) 0.6 x 15
D) 0.6 x 100,000
incidence is 15 cases per 100.000
from this 15 cases 40% die of this condition
so case fatality rate is 0.4x15=annual mortality rate from subarachnoid hemorrhage
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Old 06-07-2014
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Originally Posted by MedicalExaminer View Post
incidence is 15 cases per 100.000
from this 15 cases 40% die of this condition
so case fatality rate is 0.4x15=annual mortality rate from subarachnoid hemorrhage
thanks a lot
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