What is the incidence rate from influenza in the 2016 season in the young age group at Minas Tirith? Use the following table to answer the question. Number of Residents,Diagnosed Cases,and Deaths From Influenza by Age
$10,0001,000500\begin{array} { | l | l | l | l | } \hline \text { Age group } & \begin{array} { l } \text { No. of residents } \\\text { during } 2016 \text { season }\end{array} & \begin{array} { l } \text { No. of diagnosed } \\\text { cases from influenza } \\\text { during } 2016 \text { season }\end{array} & \begin{array} { l } \text { No. of deaths from } \\\text { influenza during } 2016 \\\text { season }\end{array} \\\hline \text { Young } & 20,000 & 3,000 & 300 \\\hline \text { Old } & 10,000 & 1,000 & 500 \\\hline\end{array}$

A) 3,000 cases
B) 150 cases/1,000 people
C) 1,000 cases
D) 100 cases/1,000 people
E) 15 cases/1,000 people

Question

What is the incidence rate from influenza in the 2016 season in the young age group at Minas Tirith? Use the following table to answer the question. Number of Residents,Diagnosed Cases,and Deaths From Influenza by Age  Age group   No. of residents   during  2016  season   No. of diagnosed   cases from influenza   during  2016  season   No. of deaths from   influenza during  2016  season   Young  20 , 000 3 , 000 300  Old  10 , 000 1 , 000 500 \begin{array} { | l | l | l | l | } \hline 	ext { Age group }  &  \begin{array} { l } 	ext { No. of residents } \	ext { during } 2016 	ext { season }\end{array}  &  \begin{array} { l } 	ext { No. of diagnosed } \	ext { cases from influenza } \	ext { during } 2016 	ext { season }\end{array}  &  \begin{array} { l } 	ext { No. of deaths from } \	ext { influenza during } 2016 \	ext { season }\end{array} \\hline 	ext { Young }  &  20,000  &  3,000  &  300 \\hline 	ext { Old }  &  10,000  &  1,000  &  500 \\hline\end{array}  Age group   Young   Old  ​  No. of residents   during  2016  season  ​ 20 , 000 10 , 000 ​  No. of diagnosed   cases from influenza   during  2016  season  ​ 3 , 000 1 , 000 ​  No. of deaths from   influenza during  2016  season  ​ 300 500 ​ ​ A)  3,000 casesB)  150 cases/1,000 peopleC)  1,000 casesD)  100 cases/1,000 peopleE)  15 cases/1,000 people

Zybrea Knight · Accepted Answer

Final Answer : B, Explanation :   The incidence rate is calculated as the number of new cases divided by the population at risk, then multiplied by 1,000 for the rate per 1,000 people. For the young age group, it's   3 , 000 20 , 000 × 1 , 000 = 150  \frac{3,000}{20,000} 	imes 1,000 = 150  20 , 000 3 , 000 ​ × 1 , 000 = 150   cases per 1,000 people.

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