In the original article, there was a mistake in Table 4 as published. The article included a table referring to another mathematical model, which does not refer to this study. The corrected Table 4 appears below.
Table 4
| Variables included in the model | Regression coefficient | r2 | SEE | p-value | Collinearity statistics | |
|---|---|---|---|---|---|---|
| Tolerance | VIF | |||||
| Constant | −17.189 | < 0.001 | ||||
| Ht2/R | +0.498 | 0.916a | 3.214 | < 0.001 | 0.144 | 6.961 |
| Weight | +0.226 | 0.935b | 2.850 | < 0.001 | 0.175 | 5.713 |
| Reactance | + 0.071 | 0.942c | 2.689 | < 0.001 | 0.639 | 1.565 |
| Sex | −2.378 | 0.947d | 2.579 | < 0.001 | 0.693 | 1.443 |
| Height | +0.097 | 0.949e | 2.528 | 0.002 | 0.533 | 1.625 |
| Age | +0.222 | 0.951f | 2.498 | 0.027 | 0.355 | 2.817 |
Regression model for the prediction of fat-free mass (kg).
SEE, standard error of the estimate; VIF, variance inflation factor. Predictors:
(Constant), Ht2/R.
(Constant),s Ht2/R, weight.
(Constant), Ht2/R, weight, and reactance;
(Constant), Ht2/R, weight, reactance, and sex.
(Constant), Ht2/R, weight, reactance, sex, and height;
(Constant), Ht2/R, weight, reactance, sex, and age. The r2 change was significant for a, b, c, d, e, and, f.
In the original article, there was an error on page 5 in the section Results. In the presentation of the mathematical model for FFM estimation, the word “Fri” appears instead of the word “Sex.”
The corrected mathematical model included is presented below:
Sex: male = 0; female = 1
The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.
Statements
Publisher’s note
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Summary
Keywords
body composition, bioelectrical impedance analysis (BIA), fat-free mass (FFM), fat mass, equations, mathematical models, cross-validation
Citation
Costa RF, Silva AM, Masset KVSB, Cesário TM, Cabral BGAT, Ferrari G and Dantas PMS (2023) Corrigendum: Development and cross-validation of a predictive equation for fat-free mass in Brazilian adolescents by bioelectrical impedance. Front. Nutr. 9:1128979. doi: 10.3389/fnut.2022.1128979
Received
21 December 2022
Accepted
30 December 2022
Published
13 January 2023
Volume
9 - 2022
Edited and reviewed by
Weimin Ye, Karolinska Institutet (KI), Sweden
Updates
Copyright
© 2023 Costa, Silva, Masset, Cesário, Cabral, Ferrari and Dantas.
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
*Correspondence: Roberto Fernandes da Costa ✉ roberto@robertocosta.com.br
This article was submitted to Nutritional Epidemiology, a section of the journal Frontiers in Nutrition
Disclaimer
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.