Evidence map›Paper›PMID 29851116›Full record

SynthesisInternational journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics2018

The frequency of maternal morbidity: A systematic review of systematic reviews.

Giorgia Gon, Andreia Leite, Clara Calvert, Susannah Woodd, Wendy J Graham, Veronique Filippi

Abstract readSystematic Review
In one paragraph

Synthesis in International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 5 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

31 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Incidence of and Risk Factors for Lactational Mastitis: A Systematic Review.Journal of human lactation : official journal of International Lactation Consultant Association · 2020
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  20. Examining maternal morbidity across a spectrum of delivery locations: An analysis of the Global Network's Maternal and Neonatal Health Registry.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2023
    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.

Giorgia GonDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Andreia LeiteDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Clara CalvertDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Susannah WooddDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Wendy J GrahamDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Veronique FilippiDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEstimates of the burden of maternal morbidity are patchy.

objectiveTo conduct a systematic review of systematic reviews of maternal conditions to: (1) make available the most up-to-date frequency estimates; (2) identify which conditions do not have reliable estimates; and (3) scrutinize the quality of the available reviews. SEARCH STRATEGY: We searched Embase, MEDLINE, and CINAHL, combining terms for pregnancy, frequency (e.g. prevalence, incidence), publication type, and specific terms for each of 121 conditions. SELECTION CRITERIA: We included peer-reviewed systematic reviews aiming to estimate the frequency of at least one of the conditions in WHO's list of maternal morbidities, with estimates from at least two countries. DATA COLLECTION AND ANALYSIS: We present the frequency estimates with their uncertainty bounds by condition, region, and pregnancy/postpartum period. We also assess and present information on the quality of the systematic reviews. MAIN

resultsOut of 11 930 found, 48 reviews were selected and one more was added. From 49 reviews we extracted 34 direct and 60 indirect frequency estimates covering 35 conditions. No review was available for 71% of the conditions on the WHO list. The extracted estimates show substantial maternal morbidity, spanning the time before and beyond childbirth. There were several gaps in the quality of the reviews. Notably, one-third of the estimates were based only on facility-based studies.

conclusionsGood-quality systematic reviews are needed for several conditions, as a research priority.

Indexed as

Delivery, ObstetricPostpartum PeriodFemaleHumansPregnancyFrequencyIncidenceMaternal healthMorbidityPrevalenceSystematic review

Identifiers

PMID29851116
PMCPMC6001670

What OpenQuestion holds

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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.