You are planning a cross-sectional study of the impact of chocolate milk shake drinking on obesity risk. You have two possible ways to identify individuals who drink a chocolate milk shake at least weekly: either a food frequency questionnaire (FFQ), or a 7-

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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а.
You are planning a cross-sectional
study of the impact of chocolate milk shake
drinking on obesity risk. You have two
possible ways to identify individuals who drink
a chocolate milk shake at least weekly: either
a food frequency questionnaire (FFQ), or a 7-
day prospective diary (7DD). A friend of yours
has conducted a study to determine the
accuracy of each of these methods and
reports the following
FFQ: Sensitivity = 95%,
Specificity = 85%
7DD: Sensitivity = 85
Specificity = 95%
Please explain which measure you decided
to use and why.
Transcribed Image Text:а. You are planning a cross-sectional study of the impact of chocolate milk shake drinking on obesity risk. You have two possible ways to identify individuals who drink a chocolate milk shake at least weekly: either a food frequency questionnaire (FFQ), or a 7- day prospective diary (7DD). A friend of yours has conducted a study to determine the accuracy of each of these methods and reports the following FFQ: Sensitivity = 95%, Specificity = 85% 7DD: Sensitivity = 85 Specificity = 95% Please explain which measure you decided to use and why.
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