Evidence map›Paper›PMID 17007706›Full record

ArticleThe British journal of general practice : the journal of the Royal College of General Practitioners2006

Predicting colorectal cancer risk in patients with rectal bleeding.

Roma Robertson, Christine Campbell, David P Weller, Rob Elton, David Mant, John Primrose, Karen Nugent, Una Macleod, Rita Sharma

Open access · greenAbstract read
In one paragraph

Article in The British journal of general practice : the journal of the Royal College of General Practitioners, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 5 pooled it
1.2field-weighted citation impact, top 22% 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

14 citing papers in PubMed, 5 syntheses or guidelines pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. Systematic review of clinical features of suspected colorectal cancer in primary care.Canadian family physician Medecin de famille canadien · 2014
    Pooled it
  3. Pooled it
  4. The diagnostic value of symptoms for colorectal cancer in primary care: a systematic review.The British journal of general practice : the journal of the Royal College of General Practitioners · 2011
    Pooled it
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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 1 institution in 1 country.

Roma RobertsonCommunity Health Sciences, General Practice Section, University of Edinburgh, 20 West Richmond Street, Edinburgh EH8 9DX.
Christine Campbell
David P Weller
Rob Elton
David Mant
John Primrose
Karen Nugent
Una Macleod
Rita Sharma
University of Edinburgh · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRectal bleeding is an important symptom of colorectal cancer but has low predictive value in primary care.

aimTo determine which characteristics of rectal bleeding, along with other factors, are predictive of colorectal cancer. DESIGN OF STUDY: Observation study of patients with rectal bleeding referred to an open-access diagnostic clinic.

settingPrimary care, southern England.

methodSymptom data were collected, using a self-completed questionnaire. Logistic regression techniques were used to determine predictors of colorectal cancer.

resultsThere were 604 patients in the study and 22 (3.6%, 95% confidence interval [CI] = 2.0% to 5.2%) were diagnosed with colorectal cancer. Significant predictors of colorectal cancer were found to be age (<50 years: odds ratio [OR] = 1; 50-69 years: OR = 5.1, 95% CI = 1.4 to 18.6; > or = 70 years: OR = 8.2, 95% CI = 2.1 to 31.8) and blood mixed with the stool (Likelihood ratio [LR] 1.5; adjusted OR = 3.8; 95% CI = 1.4 to 10.5). Presence of haemorrhoids associated with bright red bleeding not mixed with stool reduced the likelihood of cancer (OR = 0.4, 95% CI = 0.1 to 1.2) but did not eliminate it--a cancer was present in 2% of patients with these symptoms.

conclusionPatient-reported type of rectal bleeding as an isolated symptom has insufficient diagnostic value to be useful in general practice. By studying referred patients, we may even have overestimated its value. At best, it could be useful as a component of a composite symptom score to guide referral decisions.

Indexed as

AgedColorectal NeoplasmsEarly DiagnosisFamily PracticeFemaleGastrointestinal HemorrhageHumansMaleMiddle AgedPredictive Value of TestsRectal DiseasesReferral and ConsultationRisk FactorsSigmoidoscopy

Identifiers

PMID17007706
PMCPMC1920716
OpenAlexW1907371505

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.