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Record W2985020789 · doi:10.1111/codi.14869

Stoma formation for Crohn’s disease in the post‐biologic era, Ma <i>et al.</i>

2019· article· en· W2985020789 on OpenAlexaboutno aff
M. Gosselink

Bibliographic record

VenueColorectal Disease · 2019
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicInflammatory Bowel Disease
Canadian institutionsnot available
Fundersnot available
KeywordsMedicineCrohn's diseaseDiseaseStoma (medicine)PopulationGeneral surgeryNoticeElective surgeryReferralIncidence (geometry)CohortSurgeryInternal medicineFamily medicine

Abstract

fetched live from OpenAlex

Up to one-third of patients with Crohn’s disease will require major abdominal surgery over the first 5 years of their disease and most Crohn’s patients will have a Crohn’s related operation at some time in their lifetime 1. Nonetheless, as surgeons we notice a trend towards less referrals for operations for Crohn’s disease, where the patients tend to present later and often in a poorer condition. It has been suggested that this change in surgical practice is due to the introduction of biologic medications for Crohn’s disease in the first half of the 2000s. However, despite the increasing use of novel biologic agents, counterintuitively the incidence of Crohn’s disease related surgery does not appear to be reducing 2. A recent large population based cohort study from Alberta, Canada, showed a decrease in emergency surgery but an increase in elective surgery 3. This might explain why surgeons get the sense that the burden for Crohn’s related surgery is less. One could expect that more elective surgery is related to earlier referral, a better condition of the patient at the time of surgery and therefore less stoma formation. In this month’s Editor’s choice study, Ma et al., from the same Canadian group, are looking at trends in stoma formation after the introduction of biologics in management of Crohn’s disease 4. In order to assess the need for stoma creation in the biological era, the authors queried an administrative population database from their area, serving 1.4 million inhabitants. They identified 545 patients who underwent bowel resection and stoma formation for Crohn’s disease between 2002 and 2011. They found a time based reduction in stoma rates from 2.30 stomas per 100 person-years to 1.51 stomas per 100 person-years. The number of emergency and temporary stomas decreased over time, whereas the number of elective permanent stomas remained stable. Except for severe perianal fistulising disease, elective stoma formation for Crohn’s disease becomes necessary where primary anastomosis is technically impossible or if there is a high risk for anastomotic breakdown. Unfortunately, this study was not able to identify the reason the stoma was indicated 4. Well-known risk factors for anastomotic complications in Crohn’s patients include recurrent clinical episodes, steroid use, and malnutrition 5. Nowadays, gastroenterologists have a wide range of medical therapies available to avoid intestinal resection. This might cause a delay to progress to surgery, which may result in a progressively more complex disease phenotype at the time of surgery. If this delay occurs, the patient’s condition deteriorates, and this forces the surgeon to elect for a stoma to avoid an anastomotic complication. The study by Ma et al. reminds us of the importance of appropriate and timely surgery, especially in the biologic era. Therefore, the IBD surgeon should be involved in the management of the Crohn’s patient from the first onset of the disease, as a member of an IBD multidisciplinary team.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.015
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.012
Threshold uncertainty score0.024

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.015
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0020.001
Science and technology studies0.0010.001
Scholarly communication0.0020.001
Open science0.0010.000
Research integrity0.0040.004
Insufficient payload (model declined to judge)0.0070.002

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.006
GPT teacher head0.236
Teacher spread0.230 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2019
Admission routes1
Has abstractyes

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