Evidence map›Paper›PMID 33032583›Full record

ArticleBMC women's health2020

Is body mass index associated with irregular menstruation: a questionnaire study?

Yunhui Tang, Yan Chen, Hua Feng, Chen Zhu, Mancy Tong, Qi Chen

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMC women's health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

12 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Reference range of testosterone and dehydroepiandrosterone sulfate levels in women during reproductive age in the Iranian population.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2023
    Article
  11. Article
  12. Article
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 at 4 institutions in 3 countries.

Yunhui TangDepartment of Family Planning, The Hospital of Obstetrics & Gynaecology, Fudan University, Shanghai, China. 945808953@qq.com.
Yan ChenDepartment of Obstetrics & Gynaecology, Tengzhou Central People's Hospital, Tengzhou, Shandong Province, China.
Hua FengDepartment of Family Planning, The Hospital of Obstetrics & Gynaecology, Fudan University, Shanghai, China.
Chen ZhuDepartment of Family Planning, The Hospital of Obstetrics & Gynaecology, Fudan University, Shanghai, China.
Mancy TongDepartment of Obstetrics, Gynaecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA.
Qi ChenThe Department of Obstetrics & Gynaecology, The University of Auckland, Auckland, New Zealand.
Obstetrics and Gynecology Hospital of Fudan University · CNTengzhou Central People's Hospital · CNUniversity of Auckland · NZYale University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIrregular menstrual cycles including the length of cycles and menses, and heavy menstrual blood loss are linked to many gynaecological diseases. Obesity has been reported to be associated with irregular menstrual cycles. However, to date, most studies investigating this association are focused on adolescence or university students. Whether this association is also seen in adult women, especially women who had a history of birth has not been fully investigated.

methodsQuestionnaire data were collected from 1012 women aged 17 to 53 years. Data on age, weight and height, gravida, the length of menstrual cycles and menses, and the number of pads used during menses were collected. Factors associated with menstrual cycle according to BMI categories were analysed.

resultsThere were no differences in the length of menstrual cycles and menses in women of different body mass index (BMI) groups. However, there was a significant difference in menstrual blood loss in women of different BMI categories. The odds ratio of having heavy menstrual blood loss in obese women was 2.28 (95% CL: 1.244, 4.193), compared to women with normal weight, while there was no difference in the odds ratio of having heavy menstrual blood loss in overweight, compared to normal weight, women. In contrast, the odds ratio of having heavy menstrual blood loss in underweight women was 0.4034 (95% CL: 0.224, 0.725), compared to women with normal weight.

conclusionAlthough BMI was not correlated with the length of menstrual cycle and menses, BMI is positively associated with menstrual blood loss. Our data suggest that BMI influences menstrual blood loss in women of reproductive age and weight control is important in women's reproductive years.

Indexed as

Body Mass IndexAdolescentAdultChinaFemaleHumansMenstrual CycleMenstruationMenstruation DisturbancesMiddle AgedObesitySurveys and QuestionnairesWaist-Hip RatioYoung AdultBMIChinese womenIrregular menstrual cycleMenstrual blood loss

Identifiers

PMID33032583
PMCPMC7545932
OpenAlexW3092542950

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.