Evidence map›Paper›PMID 35941672›Full record

ArticleNutrition & metabolism2022

Sex- and body mass index-specific reference intervals for serum leptin: a population based study in China.

Jiayu Cheng, Yingying Luo, Yufeng Li, Fang Zhang, Xiuying Zhang, Xianghai Zhou, Linong Ji

Open access · goldAbstract read
In one paragraph

Article in Nutrition & metabolism, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.2field-weighted citation impact, top 7% of its field
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

24 citing papers in PubMed, 31 citations in OpenAlex.

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  9. Variations in basic taste perception and body mass index.Journal of diabetes and metabolic disorders · 2025
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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

7 authors at 3 institutions in 1 country.

Jiayu Cheng *Department of Endocrinology and Metabolism, Peking University People's Hospital, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, China.
Yingying Luo *Department of Endocrinology and Metabolism, Peking University People's Hospital, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, China.
Yufeng LiDepartment of Endocrinology and Metabolism, Capital Medical University Pinggu Teaching Hospital, No. 59, Xinping North Road, Pinggu District, Beijing, 101200, China.
Fang ZhangDepartment of Endocrinology and Metabolism, Peking University People's Hospital, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, China.
Xiuying ZhangDepartment of Endocrinology and Metabolism, Peking University People's Hospital, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, China.
Xianghai ZhouDepartment of Endocrinology and Metabolism, Peking University People's Hospital, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, China. xianghai_zhou@bjmu.edu.cn.
Linong JiDepartment of Endocrinology and Metabolism, Peking University People's Hospital, No. 11, Xizhimen South Street, Xicheng District, Beijing, 100044, China. jiln@bjmu.edu.cn.
Peking University · CNPeking University People's Hospital · CNCapital Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLeptin is a peptide hormone secreted by adipose tissue and is an important determinant of obesity and its complications. The purpose of this study was to establish sex- and body mass index (BMI)-specific reference intervals for serum leptin in a Chinese population and investigate the factors influencing leptin concentrations.

methodsFasting serum leptin levels were assayed in 469 men and 773 women from randomly sampled Chinese residents. Blood glucose, insulin, hemoglobin A1c (HbA1c), liver enzymes, blood lipid profiles, creatinine, and uric acid (UA) levels were measured. Pearson's correlation coefficient and multiple linear regression analyses were used to estimate the relationship between serum leptin level and other variables. The reference intervals were determined by the 2.5th and 97.5th percentiles.

resultsThe mean ± standard deviation serum leptin level was much higher in women (20.92 ± 12.96 ng/mL) than in men (6.45 ± 5.53 ng/mL). The reference interval of serum leptin was 0.33-19.85 ng/mL in men and 3.60-54.86 ng/mL in women. The specific reference intervals of serum leptin in men with BMI of 20 to < 25 and 25 to < 27.5 kg/m

conclusionThis is the first study to establish sex- and BMI-specific reference intervals of leptin for both sexes in a large Chinese population. Serum concentration of leptin was predicted by BMI, HOMA-IR, UA in women, and TG in men.

Indexed as

BMICommunity populationReference intervalsSerum leptinSex

Identifiers

PMID35941672
PMCPMC9358897
OpenAlexW4290635938

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LicenceCC BY
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Registered trials

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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.