Evidence map›Paper›PMID 23370011›Full record

ArticleBMJ open2013

Oral bisphosphonates are associated with increased risk of subtrochanteric and diaphyseal fractures in elderly women: a nested case-control study.

Juan Erviti, Alvaro Alonso, Belén Oliva, Javier Gorricho, Antonio López, Julia Timoner, Consuelo Huerta, Miguel Gil, Francisco De Abajo

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 3% 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.

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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 67 citations in OpenAlex.

  1. Bisphosphonate therapy for osteogenesis imperfecta.The Cochrane database of systematic reviews · 2016
    Pooled it
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  5. Testosterone Replacement Therapy Is Associated With Increased Incidence Rate of Vertebral Fractures: A Matched Retrospective Analysis.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2025
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  19. Factors associated with atypical femoral fracture.Rheumatology international · 2016
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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

9 authors at 3 institutions in 2 countries.

Juan ErvitiDrug Prescribing Unit, Navarre Health Service, Pamplona, Navarre, Spain.
Alvaro Alonso
Belén Oliva
Javier Gorricho
Antonio López
Julia Timoner
Consuelo Huerta
Miguel Gil
Francisco De Abajo
Navarre Institute of Health Research · ESHospital Universitario Príncipe de Asturias · ESUniversity of Minnesota · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate the association between bisphosphonate use and the risk of atypical femoral fractures among women aged 65 or older.

designNested case-control study.

settingGeneral practice research database in Spain. EXPOSURES: Use of oral bisphosphonates before the occurrence of atypical fractures among cases or the corresponding index date among controls. Bisphosphonate use was categorised as ever versus never users. Ever users were divided according to the total time since first prescription.

main outcome measuresCases were defined as women aged 65 years or older with a first diagnosis of subtrochanteric or diaphyseal fracture, recorded in the BIFAP database between 1 January 2005 and 31 December 2008, and with at least 1 year of follow-up before the index date. For each case, five age-matched and calendar-year-matched controls without a history of hip or atypical fracture were randomly selected from the database. STATISTICAL ANALYSIS: OR of atypical femoral fracture by bisphosphonate use was determined using conditional logistic regression. Models were adjusted for comorbidities and use of other medications.

resultsThe analysis included 44 cases and 220 matched controls (mean age, 82 years). Ever use of bisphosphonates was more frequent in cases than controls (29.6% vs 10.5%). In multivariate analyses, OR (95% CI) of atypical femoral fracture was 4.30 (1.55 to 11.9) in ever versus never users of bisphosphonates. The risk increased with long-term use, with an OR of 9.46 (2.17 to 41.3) comparing those using bisphosphonates over 3 years versus no users (p for trend=0.01).

conclusionsBisphosphonate use was associated with an increased risk of subtrochanteric or diaphyseal fractures in elderly women in a low fracture risk population, with a higher risk among long-term bisphosphonate users.

Identifiers

PMID23370011
PMCPMC3563115
OpenAlexW2116149022

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

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.