Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 2009 Oct;148(4):484-6.
doi: 10.1016/j.ajo.2009.06.020.

Risk comparisons

Affiliations
Comparative Study

Risk comparisons

Nicholas P Jewell. Am J Ophthalmol. 2009 Oct.

Abstract

We so often use the term ‘risk’ of an event in both common language and technical articles that its meaning in any given context can be vague and misunderstood. The issue becomes even more complicated when we compare risks across groups or contrast different conditions for a single group, in part because there are multiple ways of quantifying the difference—or lack thereof—between two risks.

PubMed Disclaimer

References

    1. Gail MH. Risk. In: Armitage P, Colton T, editors. Encyclopedia of Biostatistics. John Wiley & Sons Ltd; Chichester, England: 1999.
    1. Jewell NP, Shiboski S. Statistical analysis of HIV infectivity based on partner studies. Biometrics. 1990;46:1133–1150. Medline. doi:10.2307/2532454. - PubMed
    1. The Eye Diseases Prevalence Research Group The prevalence of diabetic retinopathy among adults in the United States. Arch Ophthalmol. 2004;122:552–563. Medline. doi:10.1001/archopht.122.4.552. - PubMed
    1. Lemeshow S, Hosmer DW. Survival analysis: Applications to ophthalmic research. Am J Ophthalmol. 2009;147:957–958. Medline. doi:10.1016/j.ajo.2008.07.042. - PubMed
    1. Abramson J. Overdo$ed America: The broken promise of American medicine. HarperCollins; New York: 2004.

Publication types