Evidence map›Paper›PMID 32635921›Full record

SynthesisBMC women's health2020

Medical termination for pregnancy in early first trimester (≤ 63 days) using combination of mifepristone and misoprostol or misoprostol alone: a systematic review.

Ferid A Abubeker, Antonella Lavelanet, Maria I Rodriguez, Caron Kim

Registry-linked trialOpen access · goldAbstract readSystematic Review
In one paragraph

Synthesis in BMC women's health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05341817 (The Use of Letrozole or Mifepristone for Pretreatment of Medical Termination of Pregnancy), which is not on this map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
4.3field-weighted citation impact, top 5% 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.

NCT05341817 phase4recruitingnot on this mapstarted 2022, after this paper: background citation

The Use of Letrozole or Mifepristone for Pretreatment of Medical Termination of Pregnancy: a Randomized, Non-inferiority Trial

TypeinterventionalSponsorKK Women's and Children's HospitalRan2022 to 2025Enrolled144ConditionsAbortion in First TrimesterArmsLetrozole, Mifepristone
3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Medical methods for first trimester abortion.The Cochrane database of systematic reviews · 2022
    Pooled it
  3. Article
  4. Demographic Factors Influencing Eligibility for EMA in South Australia.The Australian & New Zealand journal of obstetrics & gynaecology · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Comparison of outpatient with inpatient mifepristone usage for cervical ripening: A randomised controlled trial.European journal of obstetrics & gynecology and reproductive biology: X · 2023
    Article
  16. Review
  17. Article
  18. 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

4 authors at 2 institutions in 2 countries.

Ferid A AbubekerUNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland. ferid.abas@sphmmc.edu.et.ORCID 0000-0002-2624-544X
Antonella LavelanetUNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland.
Maria I RodriguezDepartment of Obstetrics & Gynecology, Oregon Health & Science University, Oregon, Portland, USA.
Caron KimUNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland.
World Health Organization · CHOregon Health & Science University · US

Funding

World Health Organization 001
6 · The paper itself

Abstract

backgroundA wide range of drugs have been studied for first trimester medical abortion. Studies evaluating different regimens, including combination mifepristone and misoprostol and misoprostol alone regimens, show varying results related to safety, efficacy and other outcomes. Thus, the objectives of this systematic review were to compare the safety, effectiveness and acceptability of medical abortion and to compare medical with surgical methods of abortion ≤63 days of gestation.

methodsPubmed and EMBASE were systematically searched from database inception through January 2019 using a combination of MeSH, keywords and text words. Randomized controlled trials on induced abortion at ≤63 days that compared different regimens of medical abortion using mifepristone and/or misoprostol and trials that compared medical with surgical methods of abortion were included. We extracted data into a pre-designed form, calculated effect estimates, and performed meta-analyses where possible. The primary outcomes were ongoing pregnancy and successful abortion.

resultsThirty-three studies composed of 22,275 participants were included in this review. Combined regimens using mifepristone and misoprostol had lower rates of ongoing pregnancy, higher rates of successful abortion and satisfaction compared to misoprostol only regimens. In combined regimens, misoprostol 800 μg was more effective than 400 μg. There was no significant difference in dosing intervals between mifepristone and misoprostol and routes of misoprostol administration in combination or misoprostol alone regimens. The rate of serious adverse events was generally low.

conclusionIn this systematic review, we find that medical methods of abortion utilizing combination mifepristone and misoprostol or misoprostol alone are effective, safe and acceptable. More robust studies evaluating both the different combination and misoprostol alone regimens are needed to strengthen existing evidence as well as assess patient perspectives towards a particular regimen.

Indexed as

Abortifacient Agents, NonsteroidalAbortifacient Agents, SteroidalAbortion, InducedFemaleHumansMifepristoneMisoprostolPregnancyPregnancy Trimester, FirstAbortifacient Agents, NonsteroidalAbortifacient Agents, SteroidalMifepristoneMisoprostolFirst trimesterMedical abortionMifepristoneMisoprostolSystematic review

Identifiers

PMID32635921
PMCPMC7339463
OpenAlexW3038313425

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.