Evidence map›Paper›PMID 34610046›Full record

Observational studyPloS one2021

Surgical complications after caesarean section: A population-based cohort study.

Charlotta Larsson, Elin Djuvfelt, Anna Lindam, Katarina Tunón, Pär Nordin

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

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  7. Maternal morbidity following a trial of labor after cesarean birth: A scoping review of operative vaginal birth compared with cesarean birth in the second stage of labor.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
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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

5 authors at 2 institutions in 1 country.

Charlotta LarssonDepartment of Surgical and Perioperative Sciences, Umeå University Hospital and Östersund Hospital, Östersund, Sweden.ORCID 0000-0001-8871-7783
Elin DjuvfeltÖstersund Hospital, Östersund, Sweden.
Anna LindamDepartment of Public Health and Clinical Medicine, Unit of Research, Education and Development, Östersund Hospital, Umeå University, Umeå, Sweden.ORCID 0000-0002-6230-0354
Katarina TunónDepartment of Clinical Science, Obstetrics and Gynaecology, Umeå University Hospital, Umeå, Sweden.
Pär NordinDepartment of Surgical and Perioperative Sciences, Umeå University Hospital and Östersund Hospital, Östersund, Sweden.
Östersunds Hospital · SEUmeå University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe rate of caesarean section without medical indication is rising but the risk for surgical complications has not been fully explored.

methodsAltogether 79 052 women from the Swedish Medical Birth Register who delivered by caesarean section only from 2005 through 2016 were identified and compared with a control group of women delivering vaginally only from the same register and the same period of time. By cross-linking data with the National Patient Register the risks for bowel obstruction, incisional hernia and abdominal pain were analysed, as well as risk factors for these complications. We also analysed acute complications, uterine rupture, and placenta praevia.

findingsCaesarean section is associated with an increased risk for bowel obstruction (OR 2.92; CI 2.55-3.34), surgery for bowel obstruction (OR 2.12; CI 1.70-2.65), incisional hernia (OR 2.71; CI 2.46-3.00), surgery for incisional hernia (OR 3.35; CI 2.68-4.18), and abdominal pain (OR 1.41; CI 1.38-1.44). Smoking, obesity, and more than one section delivery added significantly to the risk for these complications.

interpretationCaesarean section is considered a safe procedure, but awareness of the risk for serious complications is important when deciding on mode of delivery. In this study, more than one section, obesity and smoking significantly increased the risk for complications after caesarean section. Prevention of smoking and obesity among fertile women worldwide must continue to be a high priority.

Indexed as

AdultCesarean SectionCohort StudiesFemaleHumansLogistic ModelsMultivariate AnalysisOdds RatioPlacenta PreviaPostoperative ComplicationsPregnancyRisk FactorsUterine Rupture

Identifiers

PMID34610046
PMCPMC8491947
OpenAlexW3202727622

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.