Evidence map›Paper›PMID 29380819›Full record

ArticleThe American journal of gastroenterology2018

Variation in Pathologist Classification of Colorectal Adenomas and Serrated Polyps.

Rebecca A Gourevitch, Sherri Rose, Seth D Crockett, Michele Morris, David S Carrell, Julia B Greer, Reetesh K Pai, Robert E Schoen, Ateev Mehrotra

Abstract read
In one paragraph

Article in The American journal of gastroenterology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 3 pooled it
–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

20 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Quality indicators for colonoscopy.Gastrointestinal endoscopy · 2024
    Guideline
  3. Pooled it
  4. Article
  5. Article
  6. Colorectal Neoplasia in Vietnamese Patients Under 50 Years of Age: A Cross-Sectional Study.The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi · 2025
    Article
  7. Article
  8. Quality Indicators for Colonoscopy.The American journal of gastroenterology · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Observational
  13. Article
  14. Predictors of Incident Serrated Polyps: Results from a Large Multicenter Clinical Trial.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2022
    Article
  15. Review
  16. Review
  17. Effect of successive endoscopic procedures in polyp and adenoma detection rates: Too early is not always too good.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2020
    Article
  18. Molecular Biomarkers of Sessile Serrated Adenoma/Polyps.Clinical and translational gastroenterology · 2019
    Article
  19. Article
  20. 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

9 authors.

Rebecca A GourevitchHarvard Medical School, Boston Massachusetts, USA.
Sherri RoseHarvard Medical School, Boston Massachusetts, USA.
Seth D CrockettDivision of Gastroenterology and Hepatology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA.
Michele MorrisDepartment of Biomedical Informatics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
David S CarrellKaiser Permanente of Washington Health Research Institute (formerly Group Health Research Institute), Seattle, Washington, USA.
Julia B GreerDivision of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Reetesh K PaiDepartment of Pathology, UPMC Presbyterian Hospital, Pittsburgh, Pennsylvania, USA.
Robert E SchoenDivision of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Ateev MehrotraHarvard Medical School, Boston Massachusetts, USA.

Funding

Virology Research Program (Program 4)P30CA016086 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Deborah F. Tate · 1985 to 2026
$201.5M
HEALTH POLICY TRAINING PROGRAMT32HS000055 · AHRQ · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI CUTLER, DAVID M · 1994 to 2024
$7.1M
Measuring and Improving Colonoscopy Quality Using Natural Language ProcessingR01CA168959 · NCI · HARVARD MEDICAL SCHOOL · PI MEHROTRA, ATEEV · 2013 to 2016
$2.1M
NCI NIH HHS P30 CA016086NCI NIH HHS R01 CA168959
6 · The paper itself

Abstract

objectivesEndoscopist quality measures such as adenoma detection rate (ADR) and serrated polyp detection rates (SPDRs) depend on pathologist classification of histology. Although variation in pathologic interpretation is recognized, we add to the literature by quantifying the impact of pathologic variability on endoscopist performance.

methodsWe used natural language processing to abstract relevant data from colonoscopy and related pathology reports performed over 2 years at four clinical sites. We quantified each pathologist's likelihood of classifying polyp specimens as adenomas or serrated polyps. We estimated the impact on endoscopists' ADR and SPDR of sending their specimens to pathologists with higher or lower classification rates.

resultsWe observed 85,526 colonoscopies performed by 119 endoscopists; 50,453 had a polyp specimen, which were analyzed by 48 pathologists. There was greater variation across pathologists in classification of serrated polyps than in classification of adenomas. We estimate the endoscopist's average SPDR would be 0.5% if all their specimens were analyzed by the pathologist in our sample with the lowest classification rate and 12.0% if all their specimens were analyzed by the pathologist with the highest classification rate. In contrast, the endoscopist's average ADR would be 28.5% and 42.4% if their specimens were analyzed by the pathologist with lowest and highest classification rate, respectively.

conclusionsThere is significant variation in pathologic interpretation, which more substantially affects endoscopist SPDR than ADR.

Identifiers

PMID29380819
PMCPMC6049074

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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.