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A case-control study was conducted to evaluate the relationship between physical activity and coronary heart disease (CHD) in men. A total of 406 men newly diagnosed with CHD were included together with 406 men of similar ages who did not have CHD. The risk of CHD (measured by the OR) was higher among men who were inactive or only moderately active (collectively called 'inactive') than among those who were physically active: Inactive Active Total Cases with CHD Controls without CHD 299 270 107 136 406 406 Odds ratio for inactive men compared to active men= (299 x 136)/(270 x 107)=1.41 Suppose there is no misclassification in these data. Total 406 406 812 What would the observed OR have been...

A case-control study was conducted to evaluate the relationship between physical activity and coronary heart disease (CHD) in men. A total of 406 men newly diagnosed with CHD were included together with 406 men of similar ages who did not have CHD. The risk of CHD (measured by the OR) was higher among men who were inactive or only moderately active (collectively called 'inactive') than among those who were physically active: Inactive Active Total Cases with CHD Controls without CHD 299 270 107 136 406 406 Odds ratio for inactive men compared to active men= (299 x 136)/(270 x 107)=1.41 Suppose there is no misclassification in these data. Total 406 406 812 What would the observed OR have been...

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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If 20% of inactive controls had been misclassified as active? 

f 10 % of inactive cases had been misclassified as active? 

 
 
 
 
 
 
A case-control study was conducted to evaluate the relationship between physical activity and coronary heart disease (CHD) in men. A total of 406 men newly diagnosed with CHD were included together with 406 men of similar ages who did not have CHD. The risk of CHD (measured by the OR) was higher among men who were inactive or only moderately active (collectively called 'inactive') than among those who were physically active: Inactive Active Total Cases with CHD Controls without CHD 299 107 406 270 136 406 Odds ratio for inactive men compared to active men= (299 x 136)/(270 x 107)=1.41 Suppose there is no misclassification in these data. What would the observed OR have been... Total 406 406 812
Transcribed Image Text:A case-control study was conducted to evaluate the relationship between physical activity and coronary heart disease (CHD) in men. A total of 406 men newly diagnosed with CHD were included together with 406 men of similar ages who did not have CHD. The risk of CHD (measured by the OR) was higher among men who were inactive or only moderately active (collectively called 'inactive') than among those who were physically active: Inactive Active Total Cases with CHD Controls without CHD 299 107 406 270 136 406 Odds ratio for inactive men compared to active men= (299 x 136)/(270 x 107)=1.41 Suppose there is no misclassification in these data. What would the observed OR have been... Total 406 406 812
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