Evidence map›Paper›PMID 33431381›Full record

Trial reportThe British journal of general practice : the journal of the Royal College of General Practitioners2021

Prostate-specific antigen testing and opportunistic prostate cancer screening: a cohort study in England, 1998-2017.

Ashley Kieran Clift, Carol Ac Coupland, Julia Hippisley-Cox

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in The British journal of general practice : the journal of the Royal College of General Practitioners, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 citing papers in PubMed.

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  20. Prostate-specific antigen testing and opportunistic prostate cancer screening - informed consent.The British journal of general practice : the journal of the Royal College of General Practitioners · 2021
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Ashley Kieran CliftProfessor of Clinical Epidemiology and Primary Care Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford.
Carol Ac CouplandSchool of Medicine, University of Nottingham, Nottingham.
Julia Hippisley-CoxProfessor of Clinical Epidemiology and Primary Care Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundProstate cancer is a leading cause of cancer- related death. Interpreting the results from trials of screening with prostate-specific antigen (PSA) is complex in terms of defining optimal prostate cancer screening policy.

aimTo assess the rates of, and factors associated with, the uptake of PSA testing and opportunistic screening (that is, a PSA test in the absence of any symptoms) in England between 1998 and 2017, and to estimate the likely rates of pre-randomisation screening and contamination (that is, unscheduled screening in the 'control' arm) of the UK-based Cluster Randomised Trial of PSA Testing for Prostate Cancer (CAP). DESIGN AND

settingOpen cohort study of men in England aged 40-75 years at cohort entry (1998-2017), undertaken using the QResearch database.

methodEligible men were followed for up to 19 years. Rates of PSA testing and opportunistic PSA screening were calculated; Cox regression was used to estimate associations.

resultsThe cohort comprised 2 808 477 men, of whom 631 426 had a total of 1 720 855 PSA tests. The authors identified that 410 724 men had opportunistic PSA screening. Cumulative proportions of uptake of opportunistic screening in the cohort were 9.96% at 5 years', 22.71% at 10 years', and 44.13% at 19 years' follow-up. The potential rate of contamination in the CAP control arm was estimated at 24.50%.

conclusionA substantial number of men in England opt in to opportunistic prostate cancer screening, despite uncertainty regarding its efficacy and harms. The rate of opportunistic prostate cancer screening in the population is likely to have contaminated the CAP trial, making it difficult to interpret the results.

Indexed as

Prostate-Specific AntigenProstatic NeoplasmsAdultAgedCohort StudiesEarly Detection of CancerEnglandHumansMaleMass ScreeningMiddle AgedProstate-Specific Antigencohort studiesprimary health careprostate cancerprostate-specific antigenscreening

Identifiers

PMID33431381
PMCPMC7805413

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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.