IDEAS home Printed from https://ideas.repec.org/a/ibn/ijspjl/v12y2025i3p1.html
   My bibliography  Save this article

The Just-About-Right Pilot Sample Size to Control the Error Margin

Author

Listed:
  • Scholastica C. Obodo
  • Deirdre Toher
  • Paul White

Abstract

In practice, the required sample size for a two-arm randomised controlled trial cannot always be determined pre-study with great accuracy. This lack of accuracy has economic, ethical and scientific implications. The sample size for a pilot study is an important consideration in helping the decision making for the sample size of a follow-on trial. Consideration of under- and over-estimation of the sample size results in the idea of a Just-About-Right (JAR) sample size. For studies involving a minimally clinical important difference (MCID) we present the pilot sample sizes to meet investigator desired JAR considerations.

Suggested Citation

  • Scholastica C. Obodo & Deirdre Toher & Paul White, 2025. "The Just-About-Right Pilot Sample Size to Control the Error Margin," International Journal of Statistics and Probability, Canadian Center of Science and Education, vol. 12(3), pages 1-1, January.
  • Handle: RePEc:ibn:ijspjl:v:12:y:2025:i:3:p:1
    as

    Download full text from publisher

    File URL: https://ccsenet.org/journal/index.php/ijsp/article/download/0/0/48790/52608
    Download Restriction: no

    File URL: https://ccsenet.org/journal/index.php/ijsp/article/view/0/48790
    Download Restriction: no
    ---><---

    More about this item

    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ibn:ijspjl:v:12:y:2025:i:3:p:1. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Canadian Center of Science and Education (email available below). General contact details of provider: https://edirc.repec.org/data/cepflch.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.