Evidence map›Paper›PMID 35365520›Full record

ArticleBMJ open2022

Development and validation of multivariable machine learning algorithms to predict risk of cancer in symptomatic patients referred urgently from primary care: a diagnostic accuracy study.

Richard Savage, Mike Messenger, Richard D Neal, Rosie Ferguson, Colin Johnston, Katherine L Lloyd, Matthew D Neal, Nigel Sansom, Peter Selby, Nisha Sharma and 5 more

Abstract read
In one paragraph

Article in BMJ open, 2022. 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. Article
  2. Observational
  3. Review
  4. Article
  5. Review
  6. Article
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

15 authors.

Richard SavagePinPoint Data Science Ltd, Leeds, UK rich.savage@pinpointdatascience.com.ORCID 0000-0001-6025-1571
Mike MessengerUniversity of Leeds, Leeds, UK.
Richard D NealUniversity of Leeds, Leeds, UK.ORCID 0000-0002-3544-2744
Rosie FergusonPinPoint Data Science Ltd, Leeds, UK.
Colin JohnstonLeeds Teaching Hospitals NHS Trust, Leeds, UK.
Katherine L LloydPinPoint Data Science Ltd, Leeds, UK.
Matthew D NealPinPoint Data Science Ltd, Leeds, UK.
Nigel SansomPinPoint Data Science Ltd, Leeds, UK.
Peter SelbyUniversity of Leeds, Leeds, UK.
Nisha SharmaLeeds Teaching Hospitals NHS Trust, Leeds, UK.
Bethany ShinkinsUniversity of Leeds, Leeds, UK.
Jim R SkinnerPinPoint Data Science Ltd, Leeds, UK.
Giles TullyPinPoint Data Science Ltd, Leeds, UK.
Sean DuffyLeeds Teaching Hospitals NHS Trust, Leeds, UK.
Geoff HallUniversity of Leeds, Leeds, UK.

Funding

Department of HealthMedical Research Council MC_PC_17193
6 · The paper itself

Abstract

objectivesTo develop and validate tests to assess the risk of any cancer for patients referred to the NHS Urgent Suspected Cancer (2-week wait, 2WW) clinical pathways.

settingPrimary and secondary care, one participating regional centre.

participantsRetrospective analysis of data from 371 799 consecutive 2WW referrals in the Leeds region from 2011 to 2019. The development cohort was composed of 224 669 consecutive patients with an urgent suspected cancer referral in Leeds between January 2011 and December 2016. The diagnostic algorithms developed were then externally validated on a similar consecutive sample of 147 130 patients (between January 2017 and December 2019). All such patients over the age of 18 with a minimum set of blood counts and biochemistry measurements available were included in the cohort. PRIMARY AND SECONDARY OUTCOME MEASURES: sensitivity, specificity, negative predictive value, positive predictive value, Receiver Operating Characteristic (ROC) curve Area Under Curve (AUC), calibration curves

resultsWe present results for two clinical use-cases. In use-case 1, the algorithms identify 20% of patients who do not have cancer and may not need an urgent 2WW referral. In use-case 2, they identify 90% of cancer cases with a high probability of cancer that could be prioritised for review.

conclusionsCombining a panel of widely available blood markers produces effective blood tests for cancer for NHS 2WW patients. The tests are affordable, and can be deployed rapidly to any NHS pathology laboratory with no additional hardware requirements.

Indexed as

Machine LearningNeoplasmsAdultAlgorithmsHumansMiddle AgedPrimary Health CareReferral and ConsultationRetrospective Studieshealth informaticsoncologystatistics & research methods

Identifiers

PMID35365520
PMCPMC8977764

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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.