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Published Online: 18 February 2020

Incorrect Analyses of Cluster-Randomized Trials that Do Not Take Clustering and Nesting into Account Likely Lead to p-Values that Are Too Small

Publication: Childhood Obesity
Volume 16, Issue Number 2

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Published In

cover image Childhood Obesity
Childhood Obesity
Volume 16Issue Number 2March 2020
Pages: 65 - 66
PubMed: 32078372


Published in print: March 2020
Published online: 18 February 2020


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    Lilian Golzarri-Arroyo
    School of Public Health, Indiana University—Bloomington, Bloomington, IN.
    J. Michael Oakes
    School of Public Health, University of Minnesota, Minneapolis, MN.
    Andrew W. Brown
    School of Public Health, Indiana University—Bloomington, Bloomington, IN.
    David B. Allison [email protected]
    School of Public Health, Indiana University—Bloomington, Bloomington, IN.


    Address correspondence to, David B. Allison, PhD, School of Public Health—Bloomington, Indiana University, 1025 E. 7th Street, Bloomington, IN 47405 [email protected]

    Author Disclosure Statement

    D.B.A. reports grants from NIH, outside the submitted work, and D.B.A. has received personal payments or promises for same from American Society for Nutrition; American Statistical Association; Biofortis; Columbia University; Fish & Richardson, P.C.; Frontiers Publishing; Henry Stewart Talks; IKEA; Indiana University; Laura and John Arnold Foundation; Johns Hopkins University; Law Offices of Ronald Marron; MD Anderson Cancer Center; Medical College of Wisconsin; NIH; Sage Publishing; The Obesity Society; Tomasik, Kotin & Kasserman LLC; University of Alabama at Birmingham; University of Miami; Nestle; and WW (formerly Weight Watchers International, LLC). Donations to a foundation have been made on his behalf by the Northarvest Bean Growers Association. D.B.A. is an unpaid member of the International Life Sciences Institute North America Board of Trustees. D.B.A.'s institution, Indiana University, has received funds to support his research or educational activities from NIH; Alliance for Potato Research and Education; American Federation for Aging Research; Dairy Management, Inc.; Herbalife; Laura and John Arnold Foundation; and Oxford University Press. D.B.A.'s prior institution, the University of Alabama at Birmingham, received gifts, contracts, and grants from the Coca-Cola Company, Pepsi, and Dr. Pepper/Snapple. In the past 12 months, Dr. Brown has received travel expenses from University of Louisville; speaking fees from Kentuckiana Health Collaborative, and Rippe Lifestyle Institute, Inc.; and he has been involved in research for which his institution or colleagues have received grants from Dairy Management, Inc., NIH, and the Sloan Foundation. The other authors declare that they have no conflict of interest.

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