Evidence map›Paper›PMID 31784447›Full record

ArticleBMJ open2019

Long-term outcomes in patients newly diagnosed with iron deficiency anaemia in general practice: a retrospective cohort study.

Annemarie Schop, Karlijn Stouten, Jurgen Riedl, Ron van Houten, Joost van Rosmalen, Frank Wolfhagen, Patrick J E Bindels, Mark-David Levin

Abstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–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

6 citing papers in PubMed.

  1. Iron Deficiency-More Than Just Anemia: A Literature Review.Journal of community hospital internal medicine perspectives · 2025
    Review
  2. Article
  3. Article
  4. Observational
  5. Observational
  6. Review
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

8 authors.

Annemarie SchopInternal Medicine, Albert Schweitzer Hospital Location Dordwijk, Dordrecht, The Netherlands a.schop2@asz.nl.ORCID 0000-0002-9786-2672
Karlijn StoutenClinical Chemistry, Albert Schweitzer Hospital Location Dordwijk, Dordrecht, The Netherlands.
Jurgen RiedlClinical Chemistry, Albert Schweitzer Hospital Location Dordwijk, Dordrecht, The Netherlands.
Ron van HoutenGeneral practice, General practice van Houten, Hendrik-Ido-Ambacht, The Netherlands.
Joost van RosmalenBiostatistics, Erasmus MC, Rotterdam, The Netherlands.
Frank WolfhagenGastro-enterology, Albert Schweitzer Hospital Location Dordwijk, Dordrecht, The Netherlands.
Patrick J E BindelsGeneral Practice, Erasmus Medical Center, Rotterdam, The Netherlands.
Mark-David LevinInternal Medicine, Albert Schweitzer Hospital Location Dordwijk, Dordrecht, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo describe all iron deficiency anaemia (IDA)-related causes during follow-up of patients newly diagnosed with IDA and to assess whether a delayed colorectal cancer (CRC) diagnosis influences survival. DESIGN AND

settingRetrospective cohort study of patients from general practices in the Dordrecht area, the Netherlands.

participantsMen and women aged ≥50 years with a new diagnosis of IDA (ie, no anaemia 2 years previously).

methodFrom February 2007 to February 2018, all relevant data were collected from the files of the referral hospital. Early IDA-related cause was defined as established within 18 weeks after IDA diagnosis. Cox proportional-hazards regression was used to analyse survival of patients with CRC diagnosis.

results587 patients with IDA were included with a median follow-up of 4.6 years. Early and late IDA-related causes could be established in 32% and 8% of patients, respectively. Early and late CRC was found in 8% and 2% of patients, respectively, and were located mainly right sided. After adjustment for age, gender and TNM classification, mortality risk was lower in patients with IDA with early CRC diagnosis, but not significantly (HR 0.30, 95% CI 0.09 to 1.02).

conclusionEven with extended follow-up, the cause of IDA remains elusive in the majority of patients with IDA in general practice. However, patients with IDA are at increased risk for in particular right-sided CRC and a late diagnosis of CRC appears to have a detrimental effect on survival in patients with IDA.

Indexed as

Delayed DiagnosisAgedAged, 80 and overAnemia, Iron-DeficiencyColorectal NeoplasmsEndoscopy, GastrointestinalFemaleFollow-Up StudiesGeneral PracticeHumansMaleMiddle AgedProportional Hazards ModelsRetrospective StudiesRisk Factorscolorectal cancergeneral practiceiron deficiency anemia

Identifiers

PMID31784447
PMCPMC6924716

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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.