Evidence map›Paper›PMID 33575889›Full record

ArticleInternational journal of colorectal disease2021

A multicenter, propensity score-matched cohort study about short-term and long-term outcomes after laparoscopic versus open surgery for locally advanced rectal cancer.

Koki Goto, Jun Watanabe, Yusuke Suwa, Kazuya Nakagawa, Hirokazu Suwa, Mayumi Ozawa, Atsushi Ishibe, Mitsuyoshi Ota, Chikara Kunisaki, Itaru Endo

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in International journal of colorectal disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Short- and long-term results of openWorld journal of gastrointestinal surgery · 2023
    Article
  5. Review
  6. Article
  7. 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

10 authors.

Koki GotoDepartment of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan.
Jun WatanabeDepartment of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan. nabe-jun@comet.ocn.ne.jp.ORCID http://orcid.org/0000-0002-7187-3664
Yusuke SuwaDepartment of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan.
Kazuya NakagawaDepartment of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Hirokazu SuwaDepartment of Surgery, Yokosuka Kyosai Hospital, Yokosuka, Japan.
Mayumi OzawaDepartment of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Atsushi IshibeDepartment of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
Mitsuyoshi OtaDepartment of Surgery, Yokohama City Minato Red Cross Hospital, Yokohama, Japan.
Chikara KunisakiDepartment of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan.
Itaru EndoDepartment of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study evaluated the results of laparoscopic surgery (LAP) compared to open surgery (OP) for locally advanced mid-to-lower rectal cancer.

methodsFrom February 2008 to December 2014, we collected patient data with clinical stage II/III mid-to-lower rectal cancer who underwent resection with LAP or OP at 13 institutions associated with the Yokohama Clinical Oncology Group (YCOG). The short-term outcomes and long-term prognoses associated with LAP and OP were analyzed after adjusting for the patients' backgrounds using propensity score matching.

resultsAmong 1091 eligible cases, a propensity score matching with six covariates-age, sex, body mass index, American Society of Anesthesiologists physical status category, tumor location, and clinical stage-extracted 237 cases each for the LAP and OP groups, respectively. After matching, there were no differences in background factors between the two groups except for the presence or absence of preoperative treatment. Operative time was significantly longer in the LAP group than that in the OP group (p < 0.001), while the amount of bleeding and the length of postoperative hospital stay were significantly lower in the LAP group than that in the OP group (p < 0.001 and p = 0.001, respectively). There were no significant differences between groups in the incidence of postoperative complications. The 3-year overall survival and relapse-free survival rates were 90.5% and 88.6% and 78.3% and 71.6% in the LAP and OP groups, respectively, which did not differ significantly.

conclusionsThe short-term outcomes and long-term prognoses of LAP in this cohort study indicated that LAP could be a therapeutic option for locally advanced rectal cancer.

trial registrationUMIN000040406.

Indexed as

LaparoscopyRectal NeoplasmsCohort StudiesHumansLength of StayNeoplasm Recurrence, LocalPostoperative ComplicationsPropensity ScoreRetrospective StudiesTreatment OutcomeLaparoscopic surgeryLong-term outcomePropensity score matchingRectal cancerTotal mesorectal excision

Identifiers

PMID33575889

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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.