Questions 1-3 relate to the following information: Consider a cohort of 15,000 people followed during a one-year time period (January 1, 2002 – January 1, 2003). In this cohort, there are 9,000 women and 6,000 men. The table shows the number of women and men with existing disease at the beginning of the time period (existing cases), the number of incident cases that are diagnosed (new cases) and the number that remain free of disease during this time period (no disease). Answer the following questions: Status During StudyWomenMenNo Disease for entire study3,0003,000Existing Cases at Baseline4,0002,000New Cases2,0001,000TOTAL9,0006,000 Question 3: What proportion of men have the disease at any time during the period of study (this is the prevalence among men)? What proportion of men without disease at baseline develop the disease during the period of study (this is the incidence among men)?Group of answer choices33.3% and 50%50 % and 25 %33% and 25%25% and 25%
Question
Questions 1-3 relate to the following information: Consider a cohort of 15,000 people followed during a one-year time period (January 1, 2002 – January 1, 2003). In this cohort, there are 9,000 women and 6,000 men. The table shows the number of women and men with existing disease at the beginning of the time period (existing cases), the number of incident cases that are diagnosed (new cases) and the number that remain free of disease during this time period (no disease). Answer the following questions: Status During StudyWomenMenNo Disease for entire study3,0003,000Existing Cases at Baseline4,0002,000New Cases2,0001,000TOTAL9,0006,000 Question 3: What proportion of men have the disease at any time during the period of study (this is the prevalence among men)? What proportion of men without disease at baseline develop the disease during the period of study (this is the incidence among men)?Group of answer choices33.3% and 50%50 % and 25 %33% and 25%25% and 25%
Solution
The prevalence of the disease among men can be calculated by adding the number of existing cases at the beginning of the study to the number of new cases, then dividing by the total number of men.
So, the calculation for prevalence would be (2,000 existing cases + 1,000 new cases) / 6,000 total men = 50%
The incidence of the disease among men can be calculated by dividing the number of new cases by the number of men who were disease-free at the beginning of the study.
So, the calculation for incidence would be 1,000 new cases / 4,000 men without disease at baseline = 25%
Therefore, the prevalence of the disease among men is 50% and the incidence is 25%.
Similar Questions
What proportion of men have the disease at any time during the period of study (this is the prevalence among men)? What proportion of men without disease at baseline develop the disease during the period of study (this is the incidence among men)?
Collect and present ONE piece of data about incidence, mortality AND/ORprevalence of the disease in Australia that compares females and males.
W04 Quiz B: Chronic DiseaseDue May 19 at 8:59am Points 5 Questions 5 Available until Jun 2 at 8:59am Time Limit None Allowed Attempts 3InstructionsPurpose: To demonstrate mastery of this week's material and to show preparedness for course activities.BEFORE taking this Quiz, please complete Week 4 Study B: Non-Communicable Disease in your GESCI 110 Workbook:Quiz Conditions This is an open-note quiz. This means you may refer to your GESCI 110 Workbook and other notes as you take this quiz. This is a short 5 question quiz. There is no time limitYou have 3 attempts to retake this quiz if desired
Question 8Answera.Case-controlb.Retrospective cohortc.Prospective cohortd.Cross-sectional
Think back to the example study earlier in this lecture. The researchers followed 3 participants in a 5 year study. You have already calculated the total person-time and found out that it is 10 years. During the study, there was one case of the disease. Calculate the rate. 101.13.33
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