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
Comment
. 2008 Dec;51(6):476-82.

Users' guide to the surgical literature: how to assess power and sample size. Laparoscopic vs open appendectomy

Collaborators, Affiliations
Comment

Users' guide to the surgical literature: how to assess power and sample size. Laparoscopic vs open appendectomy

Margherita Cadeddu et al. Can J Surg. 2008 Dec.
No abstract available

PubMed Disclaimer

Figures

Box 1
Box 1
None
FFIG. 1. Power analysis for small, medium and large effect size index.
Box 2
Box 2

Comment on

References

    1. Ignacio RC, Burke R, Spencer D, et al. Laparoscopic vs open appendectomy. Surg Endosc 2004;18:334-7. - PubMed
    1. Thoma A, Farrokhyar F, Bhandari M, et al.; Evidence-Based Surgery Working Group. Users guide to the surgical literature: how to assess a randomized controlled trial in surgery. Can J Surg 2004;47:200-8. - PMC - PubMed
    1. Thoma A. Challenges in creating a good randomized controlled trial in hand surgery. Clin Plast Surg 2005;32:563-73. - PubMed
    1. Last JM. A dictionary of epidemiology. 4th ed. New York: Oxford University Press; 2001.
    1. Cashen LH, Geiger SW. Statistical power and the testing of null hypotheses: a review of contemporary management research and recommendations for future studies. Organ Res Methods 2004;7:151-67.