Evidence map›Paper›PMID 39627905›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2025

Pain Phenotypes in Endometriosis: A Population-Based Study Using Latent Class Analysis.

Fleur Serge Kanti, Valérie Allard, Andrée-Ann Métivier, Madeleine Lemyre, Kristina Arendas, Sarah Maheux-Lacroix

Abstract read
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Review
  4. Observational
  5. Review
  6. Article
  7. Article
  8. 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.

Fleur Serge KantiCentre Hospitalier Universitaire de Québec - Université Laval, Quebec City, Quebec, Canada.ORCID https://orcid.org/0000-0001-7211-067X
Valérie AllardCentre Hospitalier Universitaire de Québec - Université Laval, Quebec City, Quebec, Canada.
Andrée-Ann MétivierCentre Hospitalier Universitaire de Québec - Université Laval, Quebec City, Quebec, Canada.ORCID https://orcid.org/0000-0002-5041-1903
Madeleine LemyreCentre Hospitalier Universitaire de Québec - Université Laval, Quebec City, Quebec, Canada.ORCID https://orcid.org/0000-0002-8047-9001
Kristina ArendasCentre Hospitalier Universitaire de Québec - Université Laval, Quebec City, Quebec, Canada.ORCID https://orcid.org/0000-0002-6158-9766
Sarah Maheux-LacroixCentre Hospitalier Universitaire de Québec - Université Laval, Quebec City, Quebec, Canada.ORCID https://orcid.org/0000-0003-4187-3708

Funding

CIHRFonds de Recherche du Québec-Santé
6 · The paper itself

Abstract

objectiveTo identify pain phenotypes in patients with endometriosis and investigate their associations with demographics, clinical characteristics, comorbidities and pain-related quality of life (QoL).

designCross-sectional, single-centre, population-based study.

settingReferral university centre in Quebec City, Canada. POPULATION: Patients diagnosed with endometriosis were enrolled consecutively between January 2020 and April 2024.

methodsLatent class analysis was used to identify pain phenotypes. A three-step approach of latent class analysis, involving logistic regression models, was applied to assess the associations between pain phenotypes and demographics, clinical characteristics, comorbidities and pain-related QoL.

main outcome measuresPain phenotypes; demographic, clinical and comorbidity predictors of phenotype membership; association between QoL and pain phenotypes.

resultsA total of 352 patients were included. Two pain phenotypes were identified with distinct clinical presentations: one (54% of the participants) with more severe and frequent pain symptoms and poorer QoL and the other (46% of the participants) with mild and less frequent pain symptoms. The high pain phenotype was associated with previous treatment failure, painkiller use, familial history of endometriosis, low annual family income and comorbidities, including painful bladder, fibromyalgia, migraines, lower back pain, irritable bowel syndrome, anxiety and depression or mood disorders. The presence of endometrioma was associated with the low pain phenotype. Phenotype membership was associated with distinct QoL profiles (p < 0.001). The mean QoL score was higher in the high pain phenotype (59; 95% CI, 56-62) than in the low pain phenotype (33; 95% CI, 29-37).

conclusionPatients with endometriosis can be categorised into two distinct phenotypes that correlate with QoL and patient characteristics. Validation in other populations is necessary and could aid the development of specialised or personalised interventions.

Indexed as

EndometriosisPainPelvic PainQuality of LifeAdultComorbidityCross-Sectional StudiesFemaleHumansLatent Class AnalysisMiddle AgedPhenotypeQuebecendometriosislatent class analysispain phenotypepelvic painquality of lifesubgrouping

Identifiers

PMID39627905
PMCPMC11794060

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.