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HandWiki. Risk Ratio. Encyclopedia. Available online: https://encyclopedia.pub/entry/37435 (accessed on 21 September 2026).
HandWiki. Risk Ratio. Encyclopedia. Available at: https://encyclopedia.pub/entry/37435. Accessed September 21, 2026.
HandWiki. "Risk Ratio" Encyclopedia, https://encyclopedia.pub/entry/37435 (accessed September 21, 2026).
HandWiki. (2022, December 01). Risk Ratio. In Encyclopedia. https://encyclopedia.pub/entry/37435
HandWiki. "Risk Ratio." Encyclopedia. Web. 01 December, 2022.
Risk Ratio
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The content is sourced from: https://handwiki.org/wiki/Risk_ratio

In epidemiology, risk ratio (RR) or relative risk is the ratio of the probability of an outcome in an exposed group to the probability of an outcome in an unexposed group. It is computed as [math]\displaystyle{ I_e / I_u }[/math], where [math]\displaystyle{ I_e }[/math] is the incidence in the exposed group, and [math]\displaystyle{ I_u }[/math] is the incidence in the unexposed group. Together with risk difference and odds ratio, risk ratio measures the association between the exposure and the outcome.

epidemiology relative risk risk ratio

References

  1. "Proportions, odds, and risk". Radiology 230 (1): 12–9. January 2004. doi:10.1148/radiol.2301031028. PMID 14695382.  https://dx.doi.org/10.1148%2Fradiol.2301031028
  2. Riegelman, Richard K. (2005). Studying a study and testing a test: how to read the medical evidence (5th ed.). Philadelphia: Lippincott Williams & Wilkins. pp. 389. ISBN 978-0-7817-4576-5. OCLC 56415070.  http://www.worldcat.org/oclc/56415070
  3. "Reporting of attributable and relative risks, 1966-97". Lancet 351 (9110): 1179. April 1998. doi:10.1016/s0140-6736(05)79123-6. PMID 9643696.  https://dx.doi.org/10.1016%2Fs0140-6736%2805%2979123-6
  4. "Relative risk versus absolute risk: one cannot be interpreted without the other". Nephrology, Dialysis, Transplantation 32 (suppl_2): ii13-ii18. April 2017. doi:10.1093/ndt/gfw465. PMID 28339913.  https://dx.doi.org/10.1093%2Fndt%2Fgfw465
  5. "CONSORT 2010 explanation and elaboration: updated guidelines for reporting parallel group randomised trials". BMJ 340: c869. March 2010. doi:10.1136/bmj.c869. PMID 20332511.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=2844943
  6. "Standard errors, confidence intervals, and significance tests". StataCorp LLC. https://www.stata.com/support/faqs/stat/2deltameth.html. 
  7. Szklo, Moyses; Nieto, F. Javier (2019). Epidemiology : beyond the basics (4th. ed.). Burlington, Massachusetts: Jones & Bartlett Learning. pp. 488. ISBN 9781284116595. OCLC 1019839414. https://www.worldcat.org/oclc/1019839414. 
  8. Katz, D.; Baptista, J.; Azen, S. P.; Pike, M. C. (1978). "Obtaining Confidence Intervals for the Risk Ratio in Cohort Studies". Biometrics 34 (3): 469–474. doi:10.2307/2530610. http://www.jstor.org/stable/2530610. 
  9. "When can odds ratios mislead? Odds ratios should be used only in case-control studies and logistic regression analyses". BMJ 317 (7166): 1155–6; author reply 1156–7. October 1998. doi:10.1136/bmj.317.7166.1155a. PMID 9784470.  http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1114127
  10. Statistical Methods in Medical Research (Fourth ed.). Blackwell Science Ltd. 2002. doi:10.1002/9780470773666. ISBN 978-0-470-77366-6.  https://dx.doi.org/10.1002%2F9780470773666
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