Evidence map›Paper›PMID 33727242›Full record

ArticleBMJ (Clinical research ed.)2021

Trends in obesity and adiposity measures by race or ethnicity among adults in the United States 2011-18: population based study.

Buyun Liu, Yang Du, Yuxiao Wu, Linda G Snetselaar, Robert B Wallace, Wei Bao

Abstract read
In one paragraph

Article in BMJ (Clinical research ed.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 179 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
179citing papers in PubMed, 6 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

179 citing papers in PubMed, 6 syntheses or guidelines pooled it.

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  20. Risk of unexpected newborn complications by day of the week and time of birth in US term singleton births.Journal of perinatology : official journal of the California Perinatal Association · 2026
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119 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Buyun LiuDepartment of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA.
Yang DuDepartment of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA.
Yuxiao WuDepartment of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA.
Linda G SnetselaarDepartment of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA.
Robert B WallaceDepartment of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA.
Wei BaoDepartment of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA, USA.ORCID 0000-0002-7301-5786

Funding

Pregnancy-associated microRNAs in plasma as predictors of gestational diabetesR21HD091458 · NICHD · UNIVERSITY OF IOWA · PI BAO, WEI · 2017 to 2018
$419k
NICHD NIH HHS R21 HD091458
6 · The paper itself

Abstract

objectiveTo examine the trends in obesity and adiposity measures, including body mass index, waist circumference, body fat percentage, and lean mass, by race or ethnicity among adults in the United States from 2011 to 2018.

designPopulation based study.

settingNational Health and Nutrition Examination Survey (NHANES), 2011-18.

participantsA nationally representative sample of US adults aged 20 years or older.

main outcome measuresWeight, height, and waist circumference among adults aged 20 years or older were measured by trained technicians using standardized protocols. Obesity was defined as body mass index of 30 or higher for non-Asians and 27.5 or higher for Asians. Abdominal obesity was defined as a waist circumference of 102 cm or larger for men and 88 cm or larger for women. Body fat percentage and lean mass were measured among adults aged 20-59 years by using dual energy x ray absorptiometry.

resultsThis study included 21 399 adults from NHANES 2011-18. Body mass index was measured for 21 093 adults, waist circumference for 20 080 adults, and body fat percentage for 10 864 adults. For the overall population, age adjusted prevalence of general obesity increased from 35.4% (95% confidence interval 32.5% to 38.3%) in 2011-12 to 43.4% (39.8% to 47.0%) in 2017-18 (P for trend<0.001), and age adjusted prevalence of abdominal obesity increased from 54.5% (51.2% to 57.8%) in 2011-12 to 59.1% (55.6% to 62.7%) in 2017-18 (P for trend=0.02). Age adjusted mean body mass index increased from 28.7 (28.2 to 29.1) in 2011-12 to 29.8 (29.2 to 30.4) in 2017-18 (P for trend=0.001), and age adjusted mean waist circumference increased from 98.4 cm (97.4 to 99.5 cm) in 2011-12 to 100.5 cm (98.9 to 102.1 cm) in 2017-18 (P for trend=0.01). Significant increases were observed in body mass index and waist circumference among the Hispanic, non-Hispanic white, and non-Hispanic Asian groups (all P for trend<0.05), but not for the non-Hispanic black group. For body fat percentage, a significant increase was observed among non-Hispanic Asians (30.6%, 29.8% to 31.4% in 2011-12; 32.7%, 32.0% to 33.4% in 2017-18; P for trend=0.001), but not among other racial or ethnic groups. The age adjusted mean lean mass decreased in the non-Hispanic black group and increased in the non-Hispanic Asian group, but no statistically significant changes were found in other racial or ethnic groups.

conclusionsAmong US adults, an increasing trend was found in obesity and adiposity measures from 2011 to 2018, although disparities exist among racial or ethnic groups.

Indexed as

AdiposityBody Mass IndexAdultAge DistributionAsianBlack or African AmericanFemaleHispanic or LatinoHumansMaleMiddle AgedNutrition SurveysObesityPrevalenceSex DistributionUnited States

Identifiers

PMID33727242
PMCPMC7961695

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.