For this problem, note the following chart: Age Group (in years) % of Population
ID: 2494970 • Letter: F
Question
For this problem, note the following chart:
Age Group
(in years)
% of Population in Age Group
Influenza Rate per 1,000 person-years
CITY A
CITY B
CITY C
Massachusetts
CITY A
CITY B
CITY C
YOUNG
40%
50%
80%
60%
2
10
30
OLD
60%
50%
20%
40%
70
110
5
There are 10,000 individuals in City A, which is located in Massachusetts. Eight young individuals and 420 old individuals develop the flu over the course of a year.
Use these data to calculate the crude influenza rate per 1,000 individuals per years in City A.
Crude rate = Total number of events in a specified time period / total population
For this problem, note the following chart:
Age Group
(in years)
% of Population in Age Group
Influenza Rate per 1,000 person-years
CITY A
CITY B
CITY C
Massachusetts
CITY A
CITY B
CITY C
YOUNG
40%
50%
80%
60%
2
10
30
OLD
60%
50%
20%
40%
70
110
5
There are 10,000 individuals in City A, which is located in Massachusetts. Eight young individuals and 420 old individuals develop the flu over the course of a year.
Use these data to calculate the crude influenza rate per 1,000 individuals per years in City A.
Crude rate = Total number of events in a specified time period / total population
Age Group
(in years)
% of Population in Age Group
Influenza Rate per 1,000 person-years
CITY A
CITY B
CITY C
Massachusetts
CITY A
CITY B
CITY C
YOUNG
40%
50%
80%
60%
2
10
30
OLD
60%
50%
20%
40%
70
110
5
Explanation / Answer
Crude influenza rate per 1,000 individuals per years in City A = [(420+8)*1000]/10000 = 42.8
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