Evidence map›Paper›PMID 33168683›Full record

SynthesisAnnals of family medicine2020

Cancer-Specific Mortality, All-Cause Mortality, and Overdiagnosis in Lung Cancer Screening Trials: A Meta-Analysis.

Mark H Ebell, Michelle Bentivegna, Cassie Hulme

Erratum issuedOpen access · diamondAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Annals of family medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 6% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Pooled it
  2. Lung cancer screening primer: Key information for primary care providers.Canadian family physician Medecin de famille canadien · 2021
    Trial
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Evaluating Pragmatism of Lung Cancer Screening Randomized Trials with the PRECIS-2 Tool.Journal of the American Board of Family Medicine : JABFM · 2025
    Article
  9. Review
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Mark H EbellDepartment of Epidemiology, College of Public Health, University of Georgia, Athens, Georgia ebell@uga.edu.
Michelle BentivegnaDepartment of Epidemiology, College of Public Health, University of Georgia, Athens, Georgia.
Cassie HulmeDepartment of Epidemiology, College of Public Health, University of Georgia, Athens, Georgia.
University of Georgia · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeBenefit of lung cancer screening using low-dose computed tomography (LDCT) in reducing lung cancer-specific and all-cause mortality is unclear. We undertook a meta-analysis to assess its associations with outcomes.

methodsWe searched the literature and previous systematic reviews to identify randomized controlled trials comparing LDCT screening with usual care or chest radiography. We performed meta-analysis using a random effects model. The primary outcomes were lung cancer-specific mortality, all-cause mortality, and the cumulative incidence ratio of lung cancer between screened and unscreened groups as a measure of overdiagnosis.

resultsMeta-analysis was based on 8 trials with 90,475 patients that had a low risk of bias. There was a significant reduction in lung cancer-specific mortality with LDCT screening (relative risk = 0.81; 95% CI, 0.74-0.89); the estimated absolute risk reduction was 0.4% (number needed to screen = 250). The reduction in all-cause mortality was not statistically significant (relative risk = 0.96; 95% CI, 0.92-1.01), but the absolute reduction was consistent with that for lung cancer-specific mortality (0.34%; number needed to screen = 294). In the studies with the longest duration of follow-up, the incidence of lung cancer was 25% higher in the screened group, corresponding to a 20% rate of overdiagnosis.

conclusionsThis meta-analysis showing a significant reduction in lung cancer-specific mortality, albeit with a tradeoff of likely overdiagnosis, supports recommendations to screen individuals at elevated risk for lung cancer with LDCT.

Indexed as

AgedCause of DeathEarly Detection of CancerFemaleHumansIncidenceLung NeoplasmsMaleMedical OveruseMiddle AgedRandomized Controlled Trials as TopicTomography, X-Ray Computedcancer screeninghealth serviceslow-dose computed tomographylung cancermass screeningoverdiagnosispreventive medicinepublic health

Identifiers

PMID33168683
PMCPMC7708293
OpenAlexW3100623077

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.