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1. bpb-us-w2.wpmucdn.com › Explaining-Odds-RatiosExplaining Odds Ratios

   bpb-us-w2.wpmucdn.com › Explaining-Odds-Ratios

   What is an odds ratio? An odds ratio (OR) is a measure of association between an exposure and an outcome. The OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that expo-sure. Odds ratios are most commonly used in case-control stud-

2. europepmc.org › article › MEDExplaining odds ratios. - Abstract - Europe PMC

   europepmc.org › article › MED

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   Aug 1, 2010 · What is an odds ratio? An odds ratio (OR) is a measure of association between an exposure and an outcome. The OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that exposure.

   • Author: Magdalena Szumilas

   • Publish Year: 2010

3. pubmed.ncbi.nlm.nih.gov › 20842279Explaining odds ratios - PubMed

   pubmed.ncbi.nlm.nih.gov › 20842279

   Explaining odds ratios. J Can Acad Child Adolesc Psychiatry. 2010 Aug;19 (3):227-9. Author. Magdalena Szumilas 1. Affiliation. 1 Research Associate, Sun Life Financial Chair in Adolescent Mental Health, IWK Health Centre & Dalhousie University, Maritime Outpatient Psychiatry, Halifax, Nova Scotia. PMID: 20842279. PMCID: PMC2938757.

   • Author: Magdalena Szumilas

   • Publish Year: 2010

4. litfl.com › odOdds ratio • LITFL • CCC Research

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   Nov 3, 2020 · An odds ratio (OR) is a measure of association between an exposure and an outcome. The OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that exposure.

5. www.ncbi.nlm.nih.gov › books › NBK431098Odds Ratio - StatPearls - NCBI Bookshelf

   www.ncbi.nlm.nih.gov › books › NBK431098

   May 22, 2023 · The odds ratio is the ratio of the odds of the event happening in an exposed group versus a non-exposed group. The odds ratio is commonly used to report the strength of association between exposure and an event.

   • Author: Steven Tenny, Mary R. Hoffman
   • Published: 2023/05/22

   • Affiliations: University of Nebraska Medical Center

6. www.semanticscholar.org › paper › Explaining-odds[PDF] Explaining odds ratios. | Semantic Scholar

   www.semanticscholar.org › paper › Explaining-odds

   Aug 1, 2010 · This article breaks down the odds ratio by reviewing the concepts and calculations of probability and odds, and discusses how to interpret an odds ratio, and how these ratios can be useful in real-world applications.

7. People also ask

   What is an odds ratio?

   • An odds ratio (OR) is a measure of association between an exposure and an outcome. The OR represents the odds that an outcome will occur given a particular exposure, compared to the odds of the outcome occurring in the absence of that expo-sure.

   Explaining Odds Ratios

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   What does it mean if odds ratio is less than 1?

   • This can be seen from the interpretation of the odds ratio. An odds ratio greater than 1 implies there are greater odds of the event happening in the exposed versus the non-exposed group. An odds ratio of less than 1 implies the odds of the event happening in the exposed group are less than in the non-exposed group.

   Odds Ratio - StatPearls - NCBI Bookshelf - National Center for

   www.ncbi.nlm.nih.gov/books/NBK431098/

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   Is the odds ratio statistically significant?

   • If the confidence interval for the odds ratio includes the number 1 then the calculated odds ratio would not be considered statistically significant. This can be seen from the interpretation of the odds ratio. An odds ratio greater than 1 implies there are greater odds of the event happening in the exposed versus the non-exposed group.

   Odds Ratio - StatPearls - NCBI Bookshelf - National Center for

   www.ncbi.nlm.nih.gov/books/NBK431098/

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   What is the odds ratio in a 2-by-2 table?

   • In a 2-by-2 table with cells a, b, c, and d (see figure), the odds ratio is odds of the event in the exposure group (a/b) divided by the odds of the event in the control or non-exposure group (c/d). Thus the odds ratio is (a/b) / (c/d) which simplifies to ad/bc. This is compared to the relative risk which is (a / (a+b)) / (c / (c+d)).

   Odds Ratio - StatPearls - NCBI Bookshelf - National Center for

   www.ncbi.nlm.nih.gov/books/NBK431098/

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   When should odds ratios be used?

   • Odds ratios are most commonly used in case-control studies, however they can also be used in cross-sectional and cohort study designs as well (with some modifications and/or assumptions).

   [PDF] Explaining odds ratios. | Semantic Scholar

   www.semanticscholar.org/paper/Explaining-odds-ratios.-Szumilas/d3f004464a83dc9cb9c354b6b2d9a0087c8a550a

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   How do you calculate odds ratio?

   • Odds Ratio = (odds of the event in the exposed group) / (odds of the event in the non-exposed group) If the data is set up in a 2 x 2 table as shown in the figure then the odds ratio is (a/b) / (c/d) = ad/bc. The following is an example to demonstrate calculating the odds ratio (OR). Example 1

   Odds Ratio - StatPearls - NCBI Bookshelf - National Center for

   www.ncbi.nlm.nih.gov/books/NBK431098/

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8. onlinelibrary.wiley.com › doi › pdfAnalysis of Categorical Data: The Odds Ratio as a Measure of ...

   onlinelibrary.wiley.com › doi › pdf

   Apr 14, 2011 · This chapter contains an overview of statistical methods for categorical data in general and binary outcomes in particular, with an emphasis on the odds ratio and its applications in psychiatry. Illustrations from a number of study designs common in psychiatry are approached using contingency tables and the methods that arise from their analysis.