CoChat
Sign Up
Cited by 27Body Composition Measurement TechniquesObesity, Physical Activity, DietNutrition and Health Studies

Validity of impedance-based equations for the prediction of total body water as measured by deuterium dilution in African women

Open access
Dioum, Aïssatou, Gartner, Agnès, Cissé, Aïta S, Delpeuch, Francis, Maire, Bernard, Wade, Salimata, Schutz, Yves·2005·The American Journal of Clinical Nutrition
DOI 10.1093/ajcn/81.3.597
Open this paper in CoChat — free accountOpen PDF

Abstract

Background Little information is available on the validity of simple and indirect body-composition methods in non-Western populations. Equations for predicting body composition are population-specific, and body composition differs between blacks and whites.Objective We tested the hypothesis that the validity of equations for predicting total body water (TBW) from bioelectrical impedance analysis measurements is likely to depend on the racial background of the group from which the equations were derived.Design The hypothesis was tested by comparing, in 36 African women, TBW values measured by deuterium dilution with those predicted by 23 equations developed in white, African American, or African subjects. These cross-validations in our African sample were also compared, whenever possible, with results from other studies in black subjects.Results Errors in predicting TBW showed acceptable values (1.3-1.9 kg) in all cases, whereas a large range of bias (0.2-6.1 kg) was observed independently of the ethnic origin of the sample from which the equations were derived. Three equations (2 from whites and 1 from blacks) showed nonsignificant bias and could be used in Africans. In all other cases, we observed either an overestimation or underestimation of TBW with variable bias values, regardless of racial background, yielding no clear trend for validity as a function of ethnic origin.Conclusions The findings of this cross-validation study emphasize the need for further fundamental research to explore the causes of the poor validity of TBW prediction equations across populations rather than the need to develop new prediction equations for use in Africa.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1093/ajcn/81.3.597

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Dioum et al. (2005) reviewed the validity of many published BIA equations for total body water prediction in Senegalese women.

    “A 2005 review by Dioum et al. examined the validity of a wide variety of published BIA equations for the prediction of total body water in Senegalese women, some derived from all white or all black samples, some from ethnically mixed samples and some from samples of unknown ethnic composition (33).”

    From Prediction of fat-free mass using bioelectrical impedance analysis in young adults from five populations of African origin (2013) · cites this paper as [33]

    The Discussion says the authors tested the validity of 23 published BIA equations for predicting total body water in African women; the Subjects section identifies the participants as women recruited in Dakar, Senegal. The section on published prediction equations describes source samples with differing or unreported ethnic composition. Calling the paper a “review” is inaccurate: it reports an empirical cross-validation study. (LLM, conf=0.87)

    Experimental — accuracy not yet measured

  • Dioum et al. found little accuracy difference among existing equations based on the ethnic makeup of their development samples.

    “The authors concluded that there was little difference in the accuracy of existing equations based on the ethnic origins of the development sample i.e., equations developed from wholly or largely African-origin or black participants did not predict total body water better than those from non-African participants (33).”

    From Prediction of fat-free mass using bioelectrical impedance analysis in young adults from five populations of African origin (2013) · cites this paper as [33]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Gartner A, Dioum A, Maire B, Delpeuch F, Schutz Y. Comparison of foot-to-foot impedance with air-displacement plethysmography to eval- uate body composition in African women. Int J Bod Comp Res 2003;1: 137-45.
  2. Racette SB, Schoeller DA, Luke AH, Shay K, Hnilicka J, Kushner RF. Relative dilution spaces of 2 H-and 18 O-labelled water in humans. Am J Physiol Endocrinol Metab 1994;267:E585-90.

Cited by

Sorted by citations

Related

Authors
Dioum, A., Gartner, A., Cissé, A. S., Delpeuch, F., Maire, B., Wade, S., & Schutz, Y.
Affiliations
Institut de Recherche pour le Développement (BJ)
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2005-03
Volume
81
Issue
3
Pages
597-604
ISSN
0002-9165 (ISSN-L)
DOI
10.1093/ajcn/81.3.597
OpenAlex
W2126022484
Cited by
27
References
41
Citations by year
2023: 1 · 2021: 1 · 2019: 1 · 2018: 2 · 2017: 1 · 2016: 1 · 2013: 2 · 2012: 2
FWCI
1.20
Type
journal article
Language
en
Open access
Licence
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
  • IRIS (submittedVersion)
  • SERVAL (Université de Lausanne) (submittedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutrition and Health Studies
Keywords
total body water, bioelectrical impedance analysis, deuterium dilution, prediction equations, cross-validation, body composition, African women, racial differences, ethnicity, prediction bias
MeSH terms
Adolescent, Adult, Black or African American, Body Composition, Body Water, Deuterium, Ethnicity, Female, Humans, Predictive Value of Tests, Reproducibility of Results, Bias, Electric Impedance, Black People, White People

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review