Evidence map›Paper›PMID 31533649›Full record

ArticleBMC pregnancy and childbirth2019

Maternal complications in twin pregnancies in Finland during 1987-2014: a retrospective study.

Annu-Riikka S Rissanen, Riina M Jernman, Mika Gissler, Irmeli Nupponen, Mika E Nuutila

Erratum issuedAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC pregnancy and childbirth, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 24 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 4 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

24 citing papers in PubMed, 4 syntheses or guidelines pooled it.

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  12. Very Early-Life Risk Factors for Developing Dementia: Evidence From Full Population Registers.The journals of gerontology. Series B, Psychological sciences and social sciences · 2023
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  13. Twins vs singletons-Long-term health outcomes.Acta obstetricia et gynecologica Scandinavica · 2023
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Annu-Riikka S RissanenObstetrics and Gynecology, University of Helsinki and Welfare District of Päijät-Häme, Keskussairaalankatu 7, 15850, Lahti, Finland. annu-riikka.rissanen@fimnet.fi.ORCID http://orcid.org/0000-0001-7840-0870
Riina M JernmanObstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Haartmaninkatu 2, P.O. BOX 140, 00029 HUS, Helsinki, Finland.
Mika GisslerFinnish Institute for Health and Welfare, P.O. BOX 30, 00271, Helsinki, Finland.
Irmeli NupponenChildren's Hospital, University of Helsinki and Helsinki University Hospital, Stenbäckinkatu 11, P.O. BOX 281, 00029 HUS, Helsinki, Finland.
Mika E NuutilaObstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Haartmaninkatu 2, P.O. BOX 140, 00029 HUS, Helsinki, Finland.

Funding

Helsingin Yliopisto State research Funding
6 · The paper itself

Abstract

backgroundTo investigate the trends and changes in the incidence and overall outcome of twin pregnancies in Finland, a retrospective study was conducted with emphasis on maternal complications, covering a 28-year study period.

methodsAll 23,498 twin pregnancies with 46,363 live born and 633 stillborn children in Finland during 1987-2014 were included in the study. Data were collected from the national Medical Birth Register and the Care Register on Hospital Care (Finnish Institute for Health and Welfare, Finland) regarding the parturients' characteristics and incidences of several pregnancy and childbirth complications. The incidences of twin pregnancies and maternal complications during pregnancy and childbirth are the main outcome measures of the study. The results are expressed in percentages, means, medians, ranges and standard deviations (SD), when appropriate.

resultsTwins comprised 1.4% of all births in Finland in 1987-2014. Parturients' mean age has remained stable, but the share of over 35 year-old parturients is increasing. The incidences of pre-eclampsia, intrahepatic cholestasis of pregnancy, gestational diabetes and postpartum haemorrhage have risen during the study period. Almost half (44.9%) of twins were born preterm, almost half via Caesarean section (47.1%), and 27.7% of twin labours were induced.

conclusionsSeveral pregnancy complications increased during the study period. Advanced maternal age among twin parturients has risen, enhancing the risks for developing complications in a pregnancy already of a high-risk category, and predisposing to preterm delivery. National and international guidelines are necessary to improve the overall outcome of twin pregnancies.

Indexed as

Obstetric Labor ComplicationsPregnancy ComplicationsAdultFemaleFinlandGestational AgeHumansInfant, NewbornMaternal AgeOutcome Assessment, Health CarePregnancyPregnancy, High-RiskPregnancy OutcomePregnancy, TwinPremature BirthRegistriesMultiple pregnancyRegister dataTwins

Identifiers

PMID31533649
PMCPMC6751578

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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.