Evidence map›Paper›PMID 35086478›Full record

ArticleBMC pregnancy and childbirth2022

Valproate prescription to women of childbearing age in English primary care: repeated cross-sectional analyses and retrospective cohort study.

Mariangela Gaudio, Emmanouela Konstantara, Mark Joy, Jeremy van Vlymen, Simon de Lusignan

Abstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

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

  1. Preconception indicators and associations with health outcomes reported in UK routine primary care data: a systematic review.The British journal of general practice : the journal of the Royal College of General Practitioners · 2025
    Pooled it
  2. Article
  3. Article
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  5. Observational
  6. Article
  7. Article
  8. Anti-seizure Medications: Challenges and Opportunities.CNS & neurological disorders drug targets · 2024
    Review
  9. The valproate prescription pattern for female mental healthcare users of reproductive age.The South African journal of psychiatry : SAJP : the journal of the Society of Psychiatrists of South Africa · 2024
    Article
  10. Article
  11. Preconception care in primary care: supporting patients to have healthier pregnancies and babies.The British journal of general practice : the journal of the Royal College of General Practitioners · 2022
    Article
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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.

Mariangela GaudioDepartment of Clinical & Experimental Medicine, University of Surrey, Leggett Building Daphne Jackson Rd, Guildford, GU2 7XP, UK.
Emmanouela KonstantaraDepartment of Clinical & Experimental Medicine, University of Surrey, Leggett Building Daphne Jackson Rd, Guildford, GU2 7XP, UK.
Mark JoyDepartment of Clinical & Experimental Medicine, University of Surrey, Leggett Building Daphne Jackson Rd, Guildford, GU2 7XP, UK.
Jeremy van VlymenDepartment of Clinical & Experimental Medicine, University of Surrey, Leggett Building Daphne Jackson Rd, Guildford, GU2 7XP, UK.
Simon de LusignanDepartment of Clinical & Experimental Medicine, University of Surrey, Leggett Building Daphne Jackson Rd, Guildford, GU2 7XP, UK. simon.delusignan@phc.ox.ac.uk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundValproate is a teratogenic drug that should be avoided during the preconception period and pregnancy. The aim was to explore general practitioners' (GPs) prescription patterns over time, describe trends, and explore inter-practice variation within primary care.

methodsWe identified women of childbearing age (12-46 years old) in the Royal College of General Practitioners (RCGP) Research and Surveillance Centre (RSC) sentinel network. We performed repeated cross-sectional analyses from 2004 to 2018 to determine rates of prescription and a retrospective cohort estimated the prevalence of use of valproate during pregnancy.

resultsIn 2004, 0.31% (95% Confidence Interval (95%CI):0.18 to 0.44%) women were prescribed valproate, decreasing to 0.16% (95%CI:0.07 to 0.24%) by 2018. Among women with epilepsy, the rate fell from 15.2% (95%CI:14.4 to 16.0%) to 8.8% (95% CI:8.2 to 9.7%) over the same period. In 2018, almost two thirds (62.2%) of women who were prescribed valproate had epilepsy only, whereas bipolar disorder and migraine accounted for 15.8% and 7.4% respectively. Contraceptive prescriptions did not increase over time, and only in 2018 was there greater odds of being prescribed contraception (OR 1.41, 95%CI:1.08 to 1.45). Just under a fifth (19.7%) of women were prescribed valproate during their pregnancy; two out of three of these pregnancies were preceded by folic acid prescription (5 mg). While some practices reduced their rate of valproate prescription, others did not.

conclusionsRegulatory guidelines have changed GPs' prescription patterns in women of childbearing potential for valproate but not for contraception. Further research is needed to identify the barriers of GPs and women of childbearing potential to undertaking contraception.

Indexed as

Drug PrescriptionsAdolescentAdultAnticonvulsantsAntimanic AgentsBipolar DisorderCohort StudiesContraceptionCross-Sectional StudiesEpilepsyFemaleGeneral PractitionersHumansMiddle AgedMigraine DisordersPractice Patterns, Physicians'AnticonvulsantsAntimanic AgentsValproic AcidBipolar DisorderComputerisedContraceptionEpilepsyGeneral practiceHigh-RiskMedical record systemsMigraine DisordersPregnancyPrenatal CareValproic Acid

Identifiers

PMID35086478
PMCPMC8793222

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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.