1. An epidemiologist for San Diego County wants to know the incidence of the new respiratory disease, RSV in San Diego over one month. The population of San Diego County is 3,286,000. At the start of the month, 6,000 people have the disease. 12,000 have already had it and are immune. What is the total population at risk for the month?

2. Age Adjustment Scenario: You are a public data health analyst for San Diego County. You and your colleagues are concerned with the increasing number of new RSV cases emerging in San Diego among children ages 0-5. You decide to look more into the incidence of the disease for the period of November 2022 to December 2022. Use the following information to calculate the age-adjusted incidence rate for RSV cases in San Diego, considering the age distribution of California. Write the age-adjusted incidence rate as the number of cases per 1,000 people.

Between November 2022 to December 2022, there were 6,500 RSV cases among children aged 0-5 in San Diego.

During this time period, there were 3,000 respiratory disease cases among all other age groups

San Diego population at risk = (answer from the first question)

Age distribution for San Diego and California are as follows:

0-5 year olds: 6% of the San Diego population vs. 8% of the California population

All others age groups: 94% of San Diego population vs. 92% of California population

3. For the next four questions, use the following information: A researcher believes that office workers are more likely to develop carpal tunnel syndrome. She decides to do a case-control study. She recruits the 100 people with carpal tunnel syndrome and 100 control subjects. Of the 100 cases, 62 reported that worked in office jobs in 2021. Of the 100 controls, 38 reported that worked in office jobs in 2021.

Ideally, what types of people should she try to recruit as control subjects?

. Individuals who have the same characteristics as the cases (except for the disease of interest).

. Individuals who have the same characteristics as the cases (except for the exposure of interest).

. Individuals who have the same characteristics as the cases in every possible way

4. A researcher believes that office workers are more likely to develop carpal tunnel syndrome. She decides to do a case-control study. She recruits the 100 people with carpal tunnel syndrome and 100 control subjects. Of the 100 cases, 62 reported that worked in office jobs in 2021. Of the 100 controls, 38 reported that worked in office jobs in 2021.

In a 2x2 table setting up this problem to calculate the odds ratio, the number in Cell A would be:

5. A researcher believes that office workers are more likely to develop carpal tunnel syndrome. She decides to do a case-control study. She recruits the 100 people with carpal tunnel syndrome and 100 control subjects. Of the 100 cases, 62 reported that worked in office jobs in 2021. Of the 100 controls, 38 reported that worked in office jobs in 2021.

What is the odds ratio for having carpal tunnel syndrome among those working in offices in 2021? Carry out your answer to 2 decimal places.

6. A researcher believes that office workers are more likely to develop carpal tunnel syndrome. She decides to do a case-control study. She recruits the 100 people with carpal tunnel syndrome and 100 control subjects. Of the 100 cases, 62 reported that worked in office jobs in 2021. Of the 100 controls, 38 reported that worked in office jobs in 2021.

Assuming the odds ratio you found above is statistically significant, what do you conclude from this odds ratio?

Group of answer choices

Those who did office work in 2021 are XXX times more likely to have carpal tunnel syndrome.

Those who did office work in 2021 are XXX times more likely to have carpal tunnel syndrome than those who did not do office work in 2021.

Those who have carpal tunnel syndrome are XXX times more likely to have done office work in 2021 than those who do not have carpal tunnel syndrome.

Those who did office work in 2021 are XXX times more likely to have carpal tunnel syndrome than those who did not have carpal tunnel syndrome.

7. For the next two questions, assume the following: There are 200 students in FMPH 40. There is an epidemic of a disease known as the Happy Dance that is sweeping through the students. Once you've gotten the Happy Dance and recovered, you are immune to it forever. 40 students in the class have previously had the Happy Dance. 8 students in the classroom were previously vaccinated against the Happy Dance, so they are immune forever. There were 60 people with existing cases of the Happy Dance on November 1. There were 60 new cases of the Happy Dance from November 1 to November 30.

The total population in the classroom at risk for the Happy Dance in the month of November is:

8. For the next two questions, assume the following: There are 200 students in FMPH 40. There is an epidemic of a disease known as the Happy Dance that is sweeping through the students. Once you've gotten the Happy Dance and recovered, you are immune to it forever. 40 students in the class have previously had the Happy Dance. 8 students in the classroom were previously vaccinated against the Happy Dance, so they are immune forever. There were 60 people with existing cases of the Happy Dance on November 1. There were 60 new cases of the Happy Dance from November 1 to November 30.

What was the incidence rate of the Happy Dane in the classroom from November 1 to November 30? Carry out your answer to 2 decimal places.

9. For the next two questions, use the following information: In a study of the effect of lack of sleep (less than 7 hours/night) on anxiety disorder, a scientist recruits and follows 1,000 people for 20 years. The study began in 2002 and today the scientist finds: 200 people reported a regular lack of sleep. Of these 200 people, 120 were diagnosed with anxiety disorder at some point. Of those who did not report regular lack of sleep, 100 were diagnosed with anxiety disorder at some point.

What is the relative risk of being diagnosed with anxiety disorder among those who regularly lack sleep? Carry out your answer to 2 decimal places.

10. For the next two questions, use the following information: In a study of the effect of lack of sleep (less than 7 hours/night) on anxiety disorder, a scientist recruits and follows 1,000 people for 20 years. The study began in 2002 and today the scientist finds: 200 people reported a regular lack of sleep. Of these 200 people, 120 were diagnosed with anxiety disorder at some point. Of those who did not report regular lack of sleep, 100 were diagnosed with anxiety disorder at some point.

How would you interpret your relative risk result?

Group of answer choices

Those who reported a regular lack of sleep were XXX times as likely to have been diagnosed with anxiety disorder.

Those who have been diagnosed with anxiety disorder were XXX times as likely to have reported a regular lack of sleep than those who have not been diagnosed with anxiety disorder.

Those who reported a regular lack of sleep were XXX times as likely to have been diagnosed with anxiety disorder than those who did not report a regular lack of sleep.

Those who reported a regular lack of sleep were XXX times as likely to have been diagnosed with anxiety disorder than those who have not been diagnosed with anxiety disorder.