Evidence map›Paper›PMID 34559892›Full record

SynthesisInternational journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics2022

Risk factors for obstetric anal sphincter injury recurrence: A systematic review and meta-analysis.

Marta Barba, Davide P Bernasconi, Stefano Manodoro, Matteo Frigerio

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

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

  1. Risk factors for obstetric anal sphincter injury recurrence: A systematic review and meta-analysis.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2022
    Pooled it
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  10. Incidence of obstetric anal sphincter injuries according to the type of forceps used in the Mexican population.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2025
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors.

Marta BarbaDepartment of Obstetrics and Gynecology, University Milano-Bicocca, Monza, Italy.
Davide P BernasconiSchool of Medicine and Surgery, University Milano-Bicocca, Monza, Italy.
Stefano ManodoroDepartment of Obstetrics and Gynecology, ASST Santi Paolo e Carlo, San Paolo Hospital, Milano, Italy.
Matteo FrigerioDepartment of Obstetrics and Gynecology, ASST Monza, San Gerardo Hospital, Monza, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWomen with previous obstetric anal sphincter injuries (OASIs) are at a higher risk of recurrence in the subsequent pregnancy, which may lead to the development or worsening of anal incontinence. Due to a lack of evidence, few recommendations can be made about the factors that may affect the risk of OASI recurrence.

objectiveWe sought to conduct a systematic review and meta-analysis to investigate potential risk factors for recurrent OASIs. SEARCH STRATEGY: Studies up to May 2019 were identified from PubMed, Scopus, Cochrane Library, and ISI Web of Science. SELECTION CRITERIA: Studies assessing the impact of risk factors on OASI recurrence in subsequent pregnancies were included. Reviews, letters to the editor, conference abstracts, book chapters, guidelines, Cochrane reviews, and expert opinions were excluded. DATA COLLECTION AND ANALYSIS: Data were extracted by two independent reviewers. Odds ratio and standardized mean difference were chosen as effect measures. Pooled estimates were calculated using the random-effects model. MAIN

resultsThe meta-analysis showed that maternal age, gestational age, occiput posterior presentation, oxytocin augmentation, operative delivery, and shoulder dystocia were associated with the risk of recurrent OASIs in the subsequent delivery.

conclusionPrenatal and intrapartum risk factors are associated with recurrence of OASI. PROSPERO registration no. CRD42020178125.

Indexed as

Fecal IncontinenceObstetric Labor ComplicationsAnal CanalDelivery, ObstetricFemaleHumansPerineumPregnancyRisk Factorsanal incontinenceanal sphincter injurymeta-analysisperineal traumasystematic review

Identifiers

PMID34559892
PMCPMC9298380

What OpenQuestion holds

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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.