SynthesisCanadian family physician Medecin de famille canadien2025
Extended duration of use of long-acting reversible contraceptives: Systematic review.
Synthesis in Canadian family physician Medecin de famille canadien, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
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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.
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.
Who cites it
0 citing papers in PubMed.
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Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo document the efficacy and safety of etonogestrel subdermal contraceptive implants, levonorgestrel (LNG) intrauterine systems (IUS), and copper (Cu) intrauterine devices (IUDs) for birth control when extended beyond prescription limits. DATA SOURCES: A systematic search of MEDLINE, Embase, and Global Health electronic databases. STUDY SELECTION: The search identified articles published between January 2000 and June 2023 on long-acting reversible contraceptive (LARC) methods and extended duration of use. Publications on LNG subdermal implants or the "frameless" IUD (not marketed in Canada), case reports, case series, animal studies, and publications not written in English or French were excluded. SYNTHESIS: Twenty-five publications were included. No pregnancies were reported during prolonged use of the etonogestrel-releasing implant for 1 or 2 additional years beyond the recommended limits (783 participants and 306 participants, respectively), nor with the use of the TCu380A IUD for years 8 to 11 (682 participants), 8 to 12 (356 participants), and 11 to 16 (228 participants). No pregnancies were reported with the LNG-IUS in 9 studies with follow-up from 6 to 15 years, while 2 pregnancies were reported during year 6 in 2 studies, and 4 pregnancies during year 7 in 3 studies. The risk of expulsion persisted during prolonged use of the TCu380A device and the 52-mg LNG-IUS. Other adverse events were infrequent.
conclusionProlonged use of LARCs is safe and much more effective than short-acting contraceptive methods. Prolonged use of LARCs might be beneficial for individuals requiring contraception especially those with disrupted access to social and health care services or living in more remote areas.
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Registered trials
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