Dramatic Decreases in BMI Percentiles, but Valid Conclusions Can Only Come From Valid Analyses

Lucan, Sean C.

doi:10.1016/j.jneb.2018.06.012

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…In response, the study authors justified their use of incorrect analyses in part by citing others who also used too few clusters, 62 reinforcing the importance of preventing such misanalysed studies from appearing in the literature to begin with. In response to a subsequent critique of the same study, 63 the original authors published a corrigendum that continued to make invalid causal conclusions about their intervention. 64 In another case, investigators randomized one school each to 4 interventions, plus 4 no-intervention control schools.…”

Section: Examples Of the Errormentioning

confidence: 99%

Childhood obesity intervention studies: A narrative review and guide for investigators, authors, editors, reviewers, journalists, and readers to guard against exaggerated effectiveness claims

Aw¹,

Altman²,

Baranowski³

et al. 2020

ESPE

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+ Prof. Altman contributed to this article prior to his untimely passing in June of 2018. His inclusion as an author here recognizes his contributions, though he was unable to approve of the final version. Disclosures Dr. Allison has received personal payments or promises for same from: Biofortis; Fish & Richardson, P.C.; HawkPartners; IKEA; Laura and John Arnold Foundation; Law Offices of Ronald Marron; Sage Publishing; Tomasik, Kotin & Kasserman LLC; Nestec (Nestlé); WW (formerly Weight Watchers International LLC). Donations to a foundation have been made on his behalf by the Northarvest Bean Growers Association and the United Soy Bean Board. Dr. Allison is an unpaid member of the International Life Sciences Institute North America Board of Trustees. Dr. Allison's institution, Indiana University, has received funds to support his research or educational activities from: Alliance for Potato Research and Education; Dairy Management Inc.; Herbalife; and the NIH. His prior institution, the University of Alabama at Birmingham, received grants, gifts or contracts from multiple food, beverage, and other for profit and non for profit organizations with interests in obesity, statistical methods, and research design. Dr. Baranowski discloses being employed by Baylor College of Medicine, his institution having NIH grants for his work, and having received speaking fees from the University of Georgia. Dr. Bland discloses that topics presented herein are related to a textbook for which he receives royalties; and has received travel accommodations from the University of Western Ontario and for the Health Services Research Board Senior Investigator Award. Dr. Brown has received travel expenses from

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Section: Examples Of the Errormentioning

confidence: 99%

Childhood obesity intervention studies: A narrative review and guide for investigators, authors, editors, reviewers, journalists, and readers to guard against exaggerated effectiveness claims

Aw¹,

Altman²,

Baranowski³

et al. 2020

ESPE

View full text Add to dashboard Cite

show abstract

“…In response, the study authors justified their use of incorrect analyses in part by citing others who also used too few clusters, reinforcing the importance of preventing such misanalyzed studies from appearing in the literature to begin with. In response to a subsequent critique of the same study, the original authors published a corrigendum that continued to make invalid causal conclusions about their intervention . In another case, investigators randomized one school each to four interventions, plus four no‐intervention control schools .…”

Section: Inferential Error: Ignoring Clustering In Studies That Randomentioning

confidence: 99%

Childhood obesity intervention studies: A narrative review and guide for investigators, authors, editors, reviewers, journalists, and readers to guard against exaggerated effectiveness claims

et al. 2019

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Being able to draw accurate conclusions from childhood obesity trials is important to make advances in reversing the obesity epidemic. However, obesity research sometimes is not conducted or reported to appropriate scientific standards. To constructively draw attention to this issue, we present 10 errors that are commonly committed, illustrate each error with examples from the childhood obesity literature, and follow with suggestions on how to avoid these errors. These errors are as follows:using self-reported outcomes and teaching to the test; foregoing control groups and risking regression to the mean creating differences over time; changing the goal posts;ignoring clustering in studies that randomize groups of children; following the forking Prof. Altman contributed to this article prior to his untimely passing in June of 2018. His inclusion as an author here recognizes his contributions, although he was unable to approve of the final version.

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Response to “Dramatic Decreases in BMI Percentiles, but Valid Conclusions Can Only Come From Valid Analyses”

Scherr

Linnell

Dharmar

et al. 2018

Journal of Nutrition Education and Behavior

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We thank you for the opportunity to respond to Dr Lucan 1 with respect to the letter about our article, "A Multicomponent, School-Based Intervention, the Shaping Healthy Choices Program, Improves Nutrition-Related Outcomes." 2 We acknowledge the points raised in this letter. Based on the comments, additional analyses were conducted on the full data set. These results, along with some amended statements, can be found in a corrigendum published in this issue.

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Dramatic Decreases in BMI Percentiles, but Valid Conclusions Can Only Come From Valid Analyses

Cited by 4 publications

References 6 publications

Childhood obesity intervention studies: A narrative review and guide for investigators, authors, editors, reviewers, journalists, and readers to guard against exaggerated effectiveness claims

Childhood obesity intervention studies: A narrative review and guide for investigators, authors, editors, reviewers, journalists, and readers to guard against exaggerated effectiveness claims

Childhood obesity intervention studies: A narrative review and guide for investigators, authors, editors, reviewers, journalists, and readers to guard against exaggerated effectiveness claims

Response to “Dramatic Decreases in BMI Percentiles, but Valid Conclusions Can Only Come From Valid Analyses”

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