child and their family were interviewed to assess whether there might be an association between certain environmental factors such as exposure to second hand smoke. This study is an example of a:
child and their family were interviewed to assess whether there might be an association between certain environmental factors such as exposure to second hand smoke. This study is an example of a:
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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
Transcribed Image Text:12. An investigator reviewed the medical records of 200 children seen for care at Boston
Medical Center in the past year who were between the ages 8-12 and identitied 40 with
asthma He also identified 40 children of the same ages who were free of asthma Each
child and their family were interviewed to assess whether there might be an association
between certain environmental factors such as exposure to second hand smoke. This
study is an example of a:
a. randomized controlled trial
b. case-control study
c. cohort study
d. crossover trial
Expert Solution

Step 1
In case-control studies, the subjects of the study are generally divided into two groups, the “cases ” who possess a particular attribute and are compared with the “controls” who do not possess that attribute.
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