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Use the information below to answer the questions that follow. A hypothetical population of 3000 elderly adults was recruited for a 10-year study of Alzheimer's disease. Upon initial exam prior to the start of follow-up, 450 cases of the disease were diagnosed and excluded from further study. Over the 10-year study period, 640 new cases of Alzheimer's disease developed, and 215 of those incident cases died from the disease. The study participants contributed a total of 18,500 person-years of follow-up time. What was the prevalence of Alzheimer's disease in the population initially recruited for this study? Express as a percentage, and round to the nearest whole number. Include only the numerical answer (no units) in the answer box. QUESTION 13 The prevalence that you calculated above describes what? The new cases of Alzheimer's disease that developed during the study period The proportion of the population that had Alzheimer's disease at the start of the study The risk of developing Alzheimer's disease during the 10-year study period O The percentage of people with Alzheimer's disease who died from Alzheimer's disease during the study period

Use the information below to answer the questions that follow. A hypothetical population of 3000 elderly adults was recruited for a 10-year study of Alzheimer's disease. Upon initial exam prior to the start of follow-up, 450 cases of the disease were diagnosed and excluded from further study. Over the 10-year study period, 640 new cases of Alzheimer's disease developed, and 215 of those incident cases died from the disease. The study participants contributed a total of 18,500 person-years of follow-up time. What was the prevalence of Alzheimer's disease in the population initially recruited for this study? Express as a percentage, and round to the nearest whole number. Include only the numerical answer (no units) in the answer box. QUESTION 13 The prevalence that you calculated above describes what? The new cases of Alzheimer's disease that developed during the study period The proportion of the population that had Alzheimer's disease at the start of the study The risk of developing Alzheimer's disease during the 10-year study period O The percentage of people with Alzheimer's disease who died from Alzheimer's disease during the study period

Phlebotomy Essentials
Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
Section: Chapter Questions
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Use the information below to answer the questions that follow. A hypothetical population of 3000 elderly adults was recruited for a 10-year study of Alzheimer's disease. Upon initial exam prior to the start of follow-up, 450 cases of the disease were diagnosed and excluded from further study. Over the 10-year study period, 640 new cases of Alzheimer's disease developed, and 215 of those incident cases died from the disease. The study participants contributed a total of 18,500 person-years of follow-up time. What was the prevalence of Alzheimer's disease in the population initially recruited for this study? Express as a percentage, and round to the nearest whole number. Include only the numerical answer (no units) in the answer box. QUESTION 13 The prevalence that you calculated above describes what? The new cases of Alzheimer's disease that developed during the study period The proportion of the population that had Alzheimer's disease at the start of the study The risk of developing Alzheimer's disease during the 10-year study period The percentage of people with Alzheimer's disease who died from Alzheimer's disease during the study period
Transcribed Image Text:Use the information below to answer the questions that follow. A hypothetical population of 3000 elderly adults was recruited for a 10-year study of Alzheimer's disease. Upon initial exam prior to the start of follow-up, 450 cases of the disease were diagnosed and excluded from further study. Over the 10-year study period, 640 new cases of Alzheimer's disease developed, and 215 of those incident cases died from the disease. The study participants contributed a total of 18,500 person-years of follow-up time. What was the prevalence of Alzheimer's disease in the population initially recruited for this study? Express as a percentage, and round to the nearest whole number. Include only the numerical answer (no units) in the answer box. QUESTION 13 The prevalence that you calculated above describes what? The new cases of Alzheimer's disease that developed during the study period The proportion of the population that had Alzheimer's disease at the start of the study The risk of developing Alzheimer's disease during the 10-year study period The percentage of people with Alzheimer's disease who died from Alzheimer's disease during the study period
Expert Solution
Step 1

Prevalence of Alzheimer's disease in the population initially recruited for this study =

No. of cases diagnosed with Alzheimer's initially / total number of the study population.

Therefore 450/3000 * 100= 15%

 

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