Evidence map›Paper›PMID 31050638›Full record

Trial reportThe Permanente journal2019

Relapse Prevention by Plant-Based Diet Incorporated into Induction Therapy for Ulcerative Colitis: A Single-Group Trial.

Mitsuro Chiba, Kunio Nakane, Tsuyotoshi Tsuji, Satoko Tsuda, Hajime Ishii, Hideo Ohno, Kenta Watanabe, Yu Obara, Masafumi Komatsu, Takeshi Sugawara

Abstract readClinical Trial
In one paragraph

Trial report in The Permanente journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
3.4field-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

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Dietary Patterns and Food Choices of Adults With Inflammatory Bowel Disease in New Zealand.JGH open : an open access journal of gastroenterology and hepatology · 2026
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  17. Revolution in diet therapy for inflammatory bowel disease.JGH open : an open access journal of gastroenterology and hepatology · 2024
    Review
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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

10 authors at 2 institutions in 1 country.

Mitsuro ChibaInflammatory Bowel Disease Section, Akita City Hospital, Japan.
Kunio NakaneGastroenterology Division, Akita City Hospital, Japan.
Tsuyotoshi TsujiGastrointestinal Endoscopy Section, Akita City Hospital, Japan.
Satoko TsudaAkita City Hosptial, Japan.
Hajime IshiiAkita City Hosptial, Japan.
Hideo OhnoAkita City Hosptial, Japan.
Kenta WatanabeAkita City Hosptial, Japan.
Yu ObaraAkita City Hosptial, Japan.
Masafumi KomatsuAkita City Hosptial, Japan.
Takeshi SugawaraNakadori General Hospital, Akita, Japan.
Akita University Hospital · JPNakadōri General Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextNo known previous study has focused on plant-based diet (PBD) to prevent relapse of ulcerative colitis (UC) except our previous educational hospitalization study.

objectiveTo describe the relapse rate in a large case series of UC after incorporation of PBD into induction therapy.

designAll patients with UC between 2003 and 2017 were admitted for induction therapy. Patients receiving educational hospitalization or treated with infliximab were excluded. A lacto-ovo-semivegetarian diet (PBD) together with medication prescribed according to UC guidelines was provided during hospitalization.

main outcome measuresThe primary endpoint was relapse during follow-up. The secondary endpoint was change over time in the plant-based diet score (PBDS), which evaluated adherence to the PBD.

resultsNinety-two cases were studied, of which 51 were initial episodes and 41 were relapses. Cases varied in severity (31 mild, 48 moderate, 13 severe) and extent (15 proctitis, 22 left-sided colitis, 55 extensive colitis). More severe cases existed among the relapse cases than among the initial episode cases. Cumulative relapse rates at 1- and 5-year follow-up (Kaplan-Meier analysis) were 14% and 27%, respectively, for the initial episode cases, and 36% and 53%, respectively, for relapse cases. At long-term follow-up (6 years 4 months), PBDS was significantly higher than baseline PBDS (p < 0.0001).

conclusionRelapse rates in UC after induction therapy with PBD were far lower than those previously reported with conventional therapy. Adherence to PBD was significantly higher than baseline even at 6-year follow-up. We conclude PBD is effective for preventing UC relapse.(Study identification no.: UMIN000019061: Registration: www.umin.ac.jp).

Indexed as

Diet, VegetarianAdultColitis, UlcerativeFemaleHumansMalePatient ComplianceSecondary PreventionTreatment Outcome

Identifiers

PMID31050638
PMCPMC6499111
OpenAlexW2933374386

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.