Math Problem Statement
The data for the case-control study are as follows.
Long sleep duration (7+ hours) Short sleep duration (6 hours or less)
Breast cancer 143 389 532
No breast cancer 745 1383 2128
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What measure of association do you use and what do you calculate?
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What is your interpretation of this measure of association?
Solution
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Math Problem Analysis
Mathematical Concepts
Odds Ratio
Case-Control Study
Statistics
Formulas
Odds Ratio = (A/C) / (B/D) = (143/389) / (745/1383)
OR = (A × D) / (B × C) = (143 × 1383) / (389 × 745)
Theorems
Odds Ratio Theorem
Basic Concepts of Association Measures
Suitable Grade Level
Undergraduate/Graduate (Statistics, Epidemiology)
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