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Diagnostic performance of body mass index to identify obesity as defined by body adiposity: a systematic review and meta-analysis

Okorodudu, D O, Jumean, M F, Montori, V M, Romero-Corral, A, Somers, V K, Erwin, P J, Lopez-Jimenez, F·2010·International Journal of Obesity
DOI 10.1038/ijo.2010.5
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Abstract

Objective We performed a systematic review and meta-analysis of studies that assessed the performance of body mass index (BMI) to detect body adiposity. Design Data sources were MEDLINE, EMBASE, Cochrane, Database of Systematic Reviews, Cochrane CENTRAL, Web of Science, and SCOPUS. To be included, studies must have assessed the performance of BMI to measure body adiposity, provided standard values of diagnostic performance, and used a body composition technique as the reference standard for body fat percent (BF%) measurement. We obtained pooled summary statistics for sensitivity, specificity, positive and negative likelihood ratios (LRs), and diagnostic odds ratio (DOR). The inconsistency statistic (I2) assessed potential heterogeneity. Results The search strategy yielded 3341 potentially relevant abstracts, and 25 articles met our predefined inclusion criteria. These studies evaluated 32 different samples totaling 31 968 patients. Commonly used BMI cutoffs to diagnose obesity showed a pooled sensitivity to detect high adiposity of 0.50 (95% confidence interval (CI): 0.43-0.57) and a pooled specificity of 0.90 (CI: 0.86-0.94). Positive LR was 5.88 (CI: 4.24-8.15), I (2)=97.8%; the negative LR was 0.43 (CI: 0.37-0.50), I (2)=98.5%; and the DOR was 17.91 (CI: 12.56-25.53), I (2)=91.7%. Analysis of studies that used BMI cutoffs >or=30 had a pooled sensitivity of 0.42 (CI: 0.31-0.43) and a pooled specificity of 0.97 (CI: 0.96-0.97). Cutoff values and regional origin of the studie…

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Citations

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Metadata

Authors
Okorodudu, D. O., Jumean, M. F., Montori, V. M., Romero-Corral, A., Somers, V. K., Erwin, P. J., & Lopez-Jimenez, F.
Venue
International Journal of Obesity
Publisher
Springer Science and Business Media LLC
Published
2010-02-02
Volume
34
Issue
5
Pages
791-799
ISSN
  • 0307-0565
  • 1476-5497
DOI
10.1038/ijo.2010.5
Cited by
1,028
References
5
Language
en
Licence
www.springer.com/tdm (tdm)

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