Question1 - As you monitor reports from neurologists for 4 months in your own co

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Question1- As you monitor reports from neurologists for 4 months in your own community, you find the following number of newly diagnosed Tourette Syndrome cases by month, in a population of 36,120 people

Month of Diagnosis Number Diagnosed

March 6

April 14

May 2

June 9

What is the incidence rate of Tourette Syndrome for June?

A) 6.09/10,000

B) 8.58/10,000

C) 2.49/10,000

D) 29.03%

Question 2- You work for your local health department, and you want to report on the burden of asthma in your county. You find the following information. The total population in your county is 84,000. A breakdown of the population by age, with the number of people diagnosed with asthma within each age group, is as follows:

What is the prevalence of asthma in your county?

A)

8.10/1000

B)

7.96%

C)

7.20%

D)

7.96/1000

Number of People in Population Number of People Diagnosed Age 0-17 16800 1210 Age 18-64 55440 4491 Age 65+ 11760 988

Explanation / Answer

Question 1.

(C) 2.49/10,000.

Incidence rate per 10000 = (no. of new cases of disease in a given time period X 10000)/population at risk during the study period.

= (9 X 10000)/36120 = 2.4916943522.

Question 2.

(B) 7.96%

Prevalence rate = (1210+4491+988)/(16800+55440+11760)

= 0.0796309524 = 7.963%.

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