Evidence map›Paper›PMID 17497491›Full record

ArticleScandinavian journal of primary health care2007

Bleeding complications during warfarin treatment in primary healthcare centres compared with anticoagulation clinics.

Jonas Wallvik, Anders Själander, Lars Johansson, Orjan Bjuhr, Jan-Håkan Jansson

Abstract readComparative Study
In one paragraph

Article in Scandinavian journal of primary health care, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

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

  1. Pooled it
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  9. The state of point-of-care testing: a European perspective.Upsala journal of medical sciences · 2015
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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.

Jonas WallvikDivision of Hematology, Department of Medicine at Sundsvall Hospital, Sundsvall, Sweden. jonas.wallvik@lvn.se
Anders Själander
Lars Johansson
Orjan Bjuhr
Jan-Håkan Jansson

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo examine determinants of bleeding complications during warfarin treatment in an unselected patient population and evaluate possible differences in safety between specialized anticoagulation clinics and primary healthcare centres.

designProspective cohort study. Data were collected with an admission form and medical records were scrutinized in order to pursue all adverse events. Differences between groups were estimated with a t-test and chi-squared test, and univariate and multivariate Cox regression analysis.

settingAll patients treated and monitored with oral anticoagulation in primary healthcare centres and specialized anticoagulation clinics in the Sundsvall and Skellefteå region (northern Sweden) during a five-year period. SUBJECTS: A total of 2731 patients corresponding to 5044 treatment years.

main outcome measuresBleedings were classified as fatal or major. Major bleedings were defined as an event causing admission, prolonged in-hospital care or death.

resultsIn total 195 major bleedings occurred corresponding to 3.9% per treatment year, including 34 fatal events (0.67% per treatment year). Patients monitored at the two specialized anticoagulation clinics combined had a major bleeding frequency of 4.1% as compared with 3.9% at primary healthcare units. The frequency of fatal haemorrhage was 0.57% and 0.76%, respectively. The rate of major and fatal bleeding was age related with an increase of 4% and 5%, respectively, per year.

conclusionsThere was no difference in bleeding complications between patients monitored at primary healthcare centres and specialized anticoagulation clinics. Age was continuously and independently associated with bleeding risk. These study data indicate the need to exercise caution in treatment of the elderly.

Indexed as

AgedAnticoagulantsCohort StudiesFamily PracticeFollow-Up StudiesHemorrhageHumansMiddle AgedOutcome Assessment, Health CarePrimary Health CareProspective StudiesRisk FactorsSafetyWarfarinAnticoagulantsWarfarin

Identifiers

PMID17497491
PMCPMC3379747

What OpenQuestion holds

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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.