Prevalence odds ratio versus prevalence ratio: choice comes with consequences

Odds ratio, risk ratio, and prevalence ratio are some of the measures of association which are often reported in research studies quantifying the relationship between an independent variable and the outcome of interest. There has been much debate on the issue of which measure is appropriate to repor...

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Published inStatistics in medicine Vol. 35; no. 30; pp. 5730 - 5735
Main Authors Tamhane, Ashutosh R., Westfall, Andrew O., Burkholder, Greer A., Cutter, Gary R.
Format Journal Article
LanguageEnglish
Published England Blackwell Publishing Ltd 30.12.2016
Wiley Subscription Services, Inc
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Online AccessGet full text
ISSN0277-6715
1097-0258
DOI10.1002/sim.7059

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Abstract Odds ratio, risk ratio, and prevalence ratio are some of the measures of association which are often reported in research studies quantifying the relationship between an independent variable and the outcome of interest. There has been much debate on the issue of which measure is appropriate to report depending on the study design. However, the literature on selecting a particular category of the outcome to be modeled and/or change in reference group for categorical independent variables and the effect on statistical significance, although known, is scantly discussed nor published with examples. In this article, we provide an example of a cross‐sectional study wherein prevalence ratio was chosen over (Prevalence) odds ratio and demonstrate the analytic implications of the choice of category to be modeled and choice of reference level for independent variables. Copyright © 2016 John Wiley & Sons, Ltd.
AbstractList Odds ratio, risk ratio, and prevalence ratio are some of the measures of association which are often reported in research studies quantifying the relationship between an independent variable and the outcome of interest. There has been much debate on the issue of which measure is appropriate to report depending on the study design. However, the literature on selecting a particular category of the outcome to be modeled and/or change in reference group for categorical independent variables and the effect on statistical significance, although known, is scantly discussed nor published with examples. In this article, we provide an example of a cross‐sectional study wherein prevalence ratio was chosen over (Prevalence) odds ratio and demonstrate the analytic implications of the choice of category to be modeled and choice of reference level for independent variables. Copyright © 2016 John Wiley & Sons, Ltd.
Odds ratio (OR), risk ratio (RR), and prevalence ratio (PR) are some of the measures of association which are often reported in research studies quantifying the relationship between an independent variable and the outcome of interest. There has been much debate on the issue of which measure is appropriate to report depending on the study design. However, the literature on selecting a particular category of the outcome to be modeled and/or change in reference group for categorical independent variables and the effect on statistical significance, although known, is scantly discussed nor published with examples. In this article, we provide an example of a cross-sectional study wherein PR was chosen over (Prevalence) OR and demonstrate the analytic implications of the choice of category to be modeled and choice of reference level for independent variables.
Odds ratio, risk ratio, and prevalence ratio are some of the measures of association which are often reported in research studies quantifying the relationship between an independent variable and the outcome of interest. There has been much debate on the issue of which measure is appropriate to report depending on the study design. However, the literature on selecting a particular category of the outcome to be modeled and/or change in reference group for categorical independent variables and the effect on statistical significance, although known, is scantly discussed nor published with examples. In this article, we provide an example of a cross-sectional study wherein prevalence ratio was chosen over (Prevalence) odds ratio and demonstrate the analytic implications of the choice of category to be modeled and choice of reference level for independent variables.
Author Westfall, Andrew O.
Cutter, Gary R.
Burkholder, Greer A.
Tamhane, Ashutosh R.
AuthorAffiliation 1 Department of Medicine, Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham, Alabama, USA
2 Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Issue 30
Keywords association
prevalence odds ratio
odds ratio
prevalence ratio
risk ratio
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References Nurminen M. To use or not to use the odds ratio in epidemiologic analysis? European Journal of Epidemiology 1995; 11:365-371.
Zhang J, Yu K. What's the relative risk? A method of correcting the odds ratio in cohort studies of common outcomes. Journal of the Americal Medical Association 1998; 280(19):1690-1691.
Newman S. Biostatistical Methods in Epidemiology. John Wiley & Sons: New York, NY, 2001.
Zocchetti C, Consonni D, Bertazzi P. Relationship between prevalence rate ratios and odds ratios in cross-sectional studies. International Journal of Epidemiology 1997; 26:220-223.
Walter SD. Choice of effect measure for epidemiological data. Journal of Clinical Epidemiology 2000; 53:931-939.
Miettinen OS, Cook EF. Confounding: essence and detection. American Journal of Epidemiology 1981; 114:593-603.
Lee J, Chia K. Prevalence odds ratio v prevalence ratio-a response. Occupational and Environmental Medicine 1995; 52:781-782.
Cook T. Advanced statistics: up with odds ratios! a case for odds ratios when outcomes are common. Academic Emergency Medicine 2002; 9(12):1430-1434.
Bland JM, Altman D. The odds ratio. British Medical Journal 2000; 320(7247):1468.
Gordis L. Epidemiology (4th edn). Saunders Elsevier: USA, 2004.
Axelson O, Fredriksson M, Ekberg K. Use of the prevalence ratio v the prevalence odds ratio in view of confounding in cross sectional studies. Occupational and Environmental Medicine 1995; 52:494-496.
Greenland S. Interpretation and choice of effect measures in epidemiologic analysis. American Journal of Epidemiology 1987; 125:761-768.
Stromberg U. Prevalence odds ratio v prevalence ratio. Occupational and Environmental Medicine 1994; 51:143-144.
Kleinbaum D, Kupper L, Morgenstern H. Epidemiologic Research. Principles and Quantitative Methods: Lifetime Learning Publications: Belmont, California, 1982.
Lee J, Chia K. Estimation of prevalence rate ratios for cross-sectional data: an example in occupational epidemiology. British Journal of Industrial Medicine 1993; 50:861-862.
Schmidt C, Kohlmann T. When to use the odds ratio or the relative risk? International Journal of Public Health 2008; 53:165-167.
Hughes K. Odds ratios in cross-sectional studies. International Journal of Epidemiology 1995; 24:463-464.
Szklo M, Nieto FJ. Epidemiology Beyond the Basics (2nd edn). Jones and Bartlett: USA, 2007.
Zocchetti C, Consonni D, Bertazzi P. Estimation of prevalence rate ratios from cross-sectional data. International Journal of Epidemiology 1995; 24:1064-1065.
Thompson M, Myers J, Kriebel D. Prevalence odds ratio or prevalence ratio in the analysis of cross sectional data: what is to be done? Occupational and Environmental Medicine 1998; 55:272-277.
Osborn J, Cattaruzza M. Odds ratio and relative risk for cross-sectional data. International Journal of Epidemiology 1995; 24:464-465.
Eckerman S, Corry M, Willan A. Indirect comparison: relative risk fallacies and odds solution. Journal of Clinical Epidemiology 2009; 62:1031-1036.
Senn S, Walter S, Olkin I. Odds ratio revisited. Evidence Based Medicine. 1998; 3:71.
Lee L, Chia K. Use of the prevalence ratio v the prevalence odds ratio as a measure of risk in cross sectional studies. Occupational and Environmental Medicine 1994; 51:841.
Zou G. A modified poisson regression approach to prospective studies with binary data. American Journal of Epidemiology 2004; 159(7):702-706.
Lee J. Estimation of prevalence rate ratios from cross sectional data: a reply. International Journal of Epidemiology 1995; 24:1066-1067.
Lee J. Odds ratio or relative risk for cross-sectional data. International Journal of Epidemiology 1994; 23:201-203.
Stromberg U. Prevalence odds ratio v prevalence ratio-some further comments. Occupational and Environmental Medicine 1995; 42:143.
Kleinbaum D, Sullivan K, Barker N. A Pocket Guide to Epidemiology. Springer: USA, 2007.
Cumminngs P. The relative merits of risk ratios and odds ratios. Archives of Pediatrics & Adolescent Medicine 2009; 163(5):438-445.
McNutt L, Wu C, Xue X, Hafner J. Estimating the relative risk in cohort studies and clinical trials of common outcomes. American Journal of Epidemiology 2003; 157(10):940-943.
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28872254 - Stat Med. 2017 Oct 15;36(23):3760. doi: 10.1002/sim.7375
References_xml – reference: Zhang J, Yu K. What's the relative risk? A method of correcting the odds ratio in cohort studies of common outcomes. Journal of the Americal Medical Association 1998; 280(19):1690-1691.
– reference: Lee J, Chia K. Prevalence odds ratio v prevalence ratio-a response. Occupational and Environmental Medicine 1995; 52:781-782.
– reference: Lee L, Chia K. Use of the prevalence ratio v the prevalence odds ratio as a measure of risk in cross sectional studies. Occupational and Environmental Medicine 1994; 51:841.
– reference: Nurminen M. To use or not to use the odds ratio in epidemiologic analysis? European Journal of Epidemiology 1995; 11:365-371.
– reference: Greenland S. Interpretation and choice of effect measures in epidemiologic analysis. American Journal of Epidemiology 1987; 125:761-768.
– reference: Stromberg U. Prevalence odds ratio v prevalence ratio. Occupational and Environmental Medicine 1994; 51:143-144.
– reference: Cumminngs P. The relative merits of risk ratios and odds ratios. Archives of Pediatrics & Adolescent Medicine 2009; 163(5):438-445.
– reference: Cook T. Advanced statistics: up with odds ratios! a case for odds ratios when outcomes are common. Academic Emergency Medicine 2002; 9(12):1430-1434.
– reference: Hughes K. Odds ratios in cross-sectional studies. International Journal of Epidemiology 1995; 24:463-464.
– reference: Osborn J, Cattaruzza M. Odds ratio and relative risk for cross-sectional data. International Journal of Epidemiology 1995; 24:464-465.
– reference: Senn S, Walter S, Olkin I. Odds ratio revisited. Evidence Based Medicine. 1998; 3:71.
– reference: Lee J. Estimation of prevalence rate ratios from cross sectional data: a reply. International Journal of Epidemiology 1995; 24:1066-1067.
– reference: Kleinbaum D, Kupper L, Morgenstern H. Epidemiologic Research. Principles and Quantitative Methods: Lifetime Learning Publications: Belmont, California, 1982.
– reference: Zocchetti C, Consonni D, Bertazzi P. Estimation of prevalence rate ratios from cross-sectional data. International Journal of Epidemiology 1995; 24:1064-1065.
– reference: Zocchetti C, Consonni D, Bertazzi P. Relationship between prevalence rate ratios and odds ratios in cross-sectional studies. International Journal of Epidemiology 1997; 26:220-223.
– reference: Walter SD. Choice of effect measure for epidemiological data. Journal of Clinical Epidemiology 2000; 53:931-939.
– reference: Schmidt C, Kohlmann T. When to use the odds ratio or the relative risk? International Journal of Public Health 2008; 53:165-167.
– reference: Newman S. Biostatistical Methods in Epidemiology. John Wiley & Sons: New York, NY, 2001.
– reference: Zou G. A modified poisson regression approach to prospective studies with binary data. American Journal of Epidemiology 2004; 159(7):702-706.
– reference: Kleinbaum D, Sullivan K, Barker N. A Pocket Guide to Epidemiology. Springer: USA, 2007.
– reference: Thompson M, Myers J, Kriebel D. Prevalence odds ratio or prevalence ratio in the analysis of cross sectional data: what is to be done? Occupational and Environmental Medicine 1998; 55:272-277.
– reference: Miettinen OS, Cook EF. Confounding: essence and detection. American Journal of Epidemiology 1981; 114:593-603.
– reference: Szklo M, Nieto FJ. Epidemiology Beyond the Basics (2nd edn). Jones and Bartlett: USA, 2007.
– reference: Lee J. Odds ratio or relative risk for cross-sectional data. International Journal of Epidemiology 1994; 23:201-203.
– reference: Eckerman S, Corry M, Willan A. Indirect comparison: relative risk fallacies and odds solution. Journal of Clinical Epidemiology 2009; 62:1031-1036.
– reference: Stromberg U. Prevalence odds ratio v prevalence ratio-some further comments. Occupational and Environmental Medicine 1995; 42:143.
– reference: Bland JM, Altman D. The odds ratio. British Medical Journal 2000; 320(7247):1468.
– reference: Axelson O, Fredriksson M, Ekberg K. Use of the prevalence ratio v the prevalence odds ratio in view of confounding in cross sectional studies. Occupational and Environmental Medicine 1995; 52:494-496.
– reference: Gordis L. Epidemiology (4th edn). Saunders Elsevier: USA, 2004.
– reference: Lee J, Chia K. Estimation of prevalence rate ratios for cross-sectional data: an example in occupational epidemiology. British Journal of Industrial Medicine 1993; 50:861-862.
– reference: McNutt L, Wu C, Xue X, Hafner J. Estimating the relative risk in cohort studies and clinical trials of common outcomes. American Journal of Epidemiology 2003; 157(10):940-943.
– volume: 3
  start-page: 71
  year: 1998
  article-title: Odds ratio revisited
  publication-title: Evidence Based Medicine.
– volume: 52
  start-page: 494
  year: 1995
  end-page: 496
  article-title: Use of the prevalence ratio v the prevalence odds ratio in view of confounding in cross sectional studies
  publication-title: Occupational and Environmental Medicine
– volume: 24
  start-page: 464
  year: 1995
  end-page: 465
  article-title: Odds ratio and relative risk for cross‐sectional data
  publication-title: International Journal of Epidemiology
– volume: 23
  start-page: 201
  year: 1994
  end-page: 203
  article-title: Odds ratio or relative risk for cross‐sectional data
  publication-title: International Journal of Epidemiology
– volume: 55
  start-page: 272
  year: 1998
  end-page: 277
  article-title: Prevalence odds ratio or prevalence ratio in the analysis of cross sectional data: what is to be done?
  publication-title: Occupational and Environmental Medicine
– year: 2007
– year: 2001
– volume: 114
  start-page: 593
  year: 1981
  end-page: 603
  article-title: Confounding: essence and detection
  publication-title: American Journal of Epidemiology
– volume: 125
  start-page: 761
  year: 1987
  end-page: 768
  article-title: Interpretation and choice of effect measures in epidemiologic analysis
  publication-title: American Journal of Epidemiology
– volume: 157
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  issue: 10
  year: 2003
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  article-title: Estimating the relative risk in cohort studies and clinical trials of common outcomes
  publication-title: American Journal of Epidemiology
– volume: 24
  start-page: 1066
  year: 1995
  end-page: 1067
  article-title: Estimation of prevalence rate ratios from cross sectional data: a reply
  publication-title: International Journal of Epidemiology
– volume: 9
  start-page: 1430
  issue: 12
  year: 2002
  end-page: 1434
  article-title: Advanced statistics: up with odds ratios! a case for odds ratios when outcomes are common
  publication-title: Academic Emergency Medicine
– volume: 51
  start-page: 143
  year: 1994
  end-page: 144
  article-title: Prevalence odds ratio v prevalence ratio
  publication-title: Occupational and Environmental Medicine
– volume: 50
  start-page: 861
  year: 1993
  end-page: 862
  article-title: Estimation of prevalence rate ratios for cross‐sectional data: an example in occupational epidemiology
  publication-title: British Journal of Industrial Medicine
– volume: 51
  start-page: 841
  year: 1994
  article-title: Use of the prevalence ratio v the prevalence odds ratio as a measure of risk in cross sectional studies
  publication-title: Occupational and Environmental Medicine
– volume: 163
  start-page: 438
  issue: 5
  year: 2009
  end-page: 445
  article-title: The relative merits of risk ratios and odds ratios
  publication-title: Archives of Pediatrics & Adolescent Medicine
– volume: 11
  start-page: 365
  year: 1995
  end-page: 371
  article-title: To use or not to use the odds ratio in epidemiologic analysis?
  publication-title: European Journal of Epidemiology
– volume: 26
  start-page: 220
  year: 1997
  end-page: 223
  article-title: Relationship between prevalence rate ratios and odds ratios in cross‐sectional studies
  publication-title: International Journal of Epidemiology
– volume: 53
  start-page: 931
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  article-title: Choice of effect measure for epidemiological data
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– year: 1982
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  article-title: When to use the odds ratio or the relative risk?
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– volume: 52
  start-page: 781
  year: 1995
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  article-title: Prevalence odds ratio v prevalence ratio—a response
  publication-title: Occupational and Environmental Medicine
– year: 2004
– volume: 62
  start-page: 1031
  year: 2009
  end-page: 1036
  article-title: Indirect comparison: relative risk fallacies and odds solution
  publication-title: Journal of Clinical Epidemiology
– volume: 320
  start-page: 1468
  issue: 7247
  year: 2000
  article-title: The odds ratio
  publication-title: British Medical Journal
– volume: 159
  start-page: 702
  issue: 7
  year: 2004
  end-page: 706
  article-title: A modified poisson regression approach to prospective studies with binary data
  publication-title: American Journal of Epidemiology
– volume: 42
  start-page: 143
  year: 1995
  article-title: Prevalence odds ratio v prevalence ratio—some further comments
  publication-title: Occupational and Environmental Medicine
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  article-title: What's the relative risk? A method of correcting the odds ratio in cohort studies of common outcomes
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– reference: 28872254 - Stat Med. 2017 Oct 15;36(23):3760. doi: 10.1002/sim.7375
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Snippet Odds ratio, risk ratio, and prevalence ratio are some of the measures of association which are often reported in research studies quantifying the relationship...
Odds ratio (OR), risk ratio (RR), and prevalence ratio (PR) are some of the measures of association which are often reported in research studies quantifying...
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SubjectTerms association
Cross-Sectional Studies
Humans
Medical statistics
Odds Ratio
Prevalence
prevalence odds ratio
prevalence ratio
Research Design
Risk
Risk assessment
risk ratio
Variables
Title Prevalence odds ratio versus prevalence ratio: choice comes with consequences
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https://onlinelibrary.wiley.com/doi/abs/10.1002%2Fsim.7059
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https://pubmed.ncbi.nlm.nih.gov/PMC5135596
Volume 35
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