Evidence map›Paper›PMID 30324469›Full record

ArticleAnnals of surgical oncology2019

Surgeon Volume and Surgeon Age in Relation to Proficiency Gain Curves for Prognosis Following Surgery for Esophageal Cancer.

Eivind Gottlieb-Vedi, Hugh Mackenzie, Frans van Workum, Camiel Rosman, Pernilla Lagergren, Sheraz Markar, Jesper Lagergren

Open access · hybridAbstract read
In one paragraph

Article in Annals of surgical oncology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Physician Age and Patient Outcomes: A Systematic Review.Journal of general internal medicine · 2026
    Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Current Issues in Minimally Invasive Esophagectomy.The Korean journal of thoracic and cardiovascular surgery · 2020
    Article
  8. Review
  9. Article
  10. Learning curves in minimally invasive esophagectomy.World journal of gastroenterology · 2018
    Review
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

7 authors at 4 institutions in 3 countries.

Eivind Gottlieb-VediUpper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden.
Hugh MackenzieDepartment of Surgery and Cancer, Imperial College London, London, UK.
Frans van WorkumDepartment of Surgery, Radboudumc, Nijmegen, The Netherlands.
Camiel RosmanDepartment of Surgery, Radboudumc, Nijmegen, The Netherlands.
Pernilla LagergrenDepartment of Surgery and Cancer, Imperial College London, London, UK.
Sheraz MarkarUpper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden.
Jesper LagergrenUpper Gastrointestinal Surgery, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden. Jesper.Lagergren@ki.se.
Imperial College London · GBRadboud University Nijmegen · NLGuy's and St Thomas' NHS Foundation Trust · GBKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSurgery proficiency gain curves must be shortened to reduce patient harm during esophagectomy learning.

objectiveThis study aimed to test whether surgeon volume and surgeon age influenced the length of period of surgical proficiency gain.

methodsThis population-based cohort study included 1384 patients with esophageal cancer who underwent esophagectomy by any of the 36 highest-volume surgeons in Sweden between 1987 and 2010, with follow-up until 2016. Annual surgeon volume was dichotomized by the median values into 'higher-volume surgeons' (≥ 4 cases per year) and 'lower-volume surgeons' (< 4 cases per year), and surgeon age at the start of practicing esophagectomies into 'younger surgeons' (aged < 45 years) and 'older surgeons' (aged ≥ 45 years). Proficiency gain curves were constructed using risk-adjusted cumulative sum analysis for 1- to 5-year mortality (main outcome) and secondary outcomes (presented below). The results were adjusted for all established prognostic factors.

resultsFor 1- to 5-year mortality, the change point was at 14 cases among 'higher-volume surgeons', while 'lower-volume surgeons' had a later change point at 31 cases. The corresponding change points were at 13 cases among 'younger surgeons' and at 48 cases among 'older surgeons'. Similar patterns of differences in the proficiency gain curves were seen for the secondary outcomes of 30-day mortality and resection margin status (tumor involvement).

conclusionHigher-volume- and younger surgeons seem to have a substantially shorter period of proficiency gain for long-term mortality and other outcomes following surgery for esophageal cancer. This indicates a value of intensified training of younger surgeons for these complex operations.

Indexed as

Clinical CompetenceAdenocarcinomaAgedAge FactorsCarcinoma, Squamous CellCohort StudiesEsophageal NeoplasmsEsophagectomyFemaleFollow-Up StudiesHumansMaleMargins of ExcisionMiddle AgedPrognosisSurgeons

Identifiers

PMID30324469
PMCPMC6341157
OpenAlexW2896659547

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.