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The following table was taken from a paper published in 1939. The authors established the smoking habits of 172 men, half of whom had been diagnosed with lung cancer and half of whom were healthy. This was one of the very first studies which sought to establish whether a link existed between exposure to tobacco and lung cancer. Lung cancer cases Healthy men Heavy smokers 56 31 Light smokers 27 41 Non- smokers 3 14 Total 86 86 1. What can you conclude about the smoking habits of the general population from these results? 2. What proportion of lung cancer cases were heavy smokers? What proportion of healthy men were heavy smokers? 3. On the basis of a comparison of the proportions in Q2, do you consider that a reasonable doctor in 1939 who had read the paper should have advised his patients not to smoke? 4. What information would you need to estimate the extent to which the health of the population is affected by smoking?

The following table was taken from a paper published in 1939. The authors established the smoking habits of 172 men, half of whom had been diagnosed with lung cancer and half of whom were healthy. This was one of the very first studies which sought to establish whether a link existed between exposure to tobacco and lung cancer. Lung cancer cases Healthy men Heavy smokers 56 31 Light smokers 27 41 Non- smokers 3 14 Total 86 86 1. What can you conclude about the smoking habits of the general population from these results? 2. What proportion of lung cancer cases were heavy smokers? What proportion of healthy men were heavy smokers? 3. On the basis of a comparison of the proportions in Q2, do you consider that a reasonable doctor in 1939 who had read the paper should have advised his patients not to smoke? 4. What information would you need to estimate the extent to which the health of the population is affected by smoking?

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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The following table was taken from a paper published in 1939. The authors established the smoking habits of 172 men, half of whom had been diagnosed with lung cancer and half of whom were healthy. This was one of the very first studies which sought to establish whether a link existed between exposure to tobacco and lung cancer. Lung cancer cases Healthy men Heavy smokers 56 31 Light smokers 27 41 Non- smokers 3 14 Total 86 86 1. What can you conclude about the smoking habits of the general population from these results? 2. What proportion of lung cancer cases were heavy smokers? What proportion of healthy men were heavy smokers? 3. On the basis of a comparison of the proportions in Q2, do you consider that a reasonable doctor in 1939 who had read the paper should have advised his patients not to smoke? 4. What information would you need to estimate the extent to which the health of the population is affected by smoking?
Transcribed Image Text:The following table was taken from a paper published in 1939. The authors established the smoking habits of 172 men, half of whom had been diagnosed with lung cancer and half of whom were healthy. This was one of the very first studies which sought to establish whether a link existed between exposure to tobacco and lung cancer. Lung cancer cases Healthy men Heavy smokers 56 31 Light smokers 27 41 Non- smokers 3 14 Total 86 86 1. What can you conclude about the smoking habits of the general population from these results? 2. What proportion of lung cancer cases were heavy smokers? What proportion of healthy men were heavy smokers? 3. On the basis of a comparison of the proportions in Q2, do you consider that a reasonable doctor in 1939 who had read the paper should have advised his patients not to smoke? 4. What information would you need to estimate the extent to which the health of the population is affected by smoking?
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