Evidence map›Paper›PMID 26263911›Full record

ArticleSurgery today2015

Effects of body mass index (BMI) on surgical outcomes: a nationwide survey using a Japanese web-based database.

Motonari Ri, Hiroaki Miyata, Susumu Aikou, Yasuyuki Seto, Kohei Akazawa, Masahiro Takeuchi, Yoshiro Matsui, Hiroyuki Konno, Mitsukazu Gotoh, Masaki Mori and 5 more

Abstract read
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In one paragraph

Article in Surgery today, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 5% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 citations in OpenAlex.

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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

15 authors at 7 institutions in 1 country.

Motonari RiDepartment of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
Hiroaki MiyataNational Clinical Database (NCD), Tokyo, Japan.
Susumu AikouDepartment of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
Yasuyuki SetoDepartment of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan. seto-tky@umin.ac.jp.
Kohei AkazawaDepartment of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan.
Masahiro TakeuchiDepartment of Clinical Medicine, School of Pharmacy, Kitasato University, Kanagawa, Japan.
Yoshiro MatsuiDepartment of Cardiovascular and Thoracic Surgery, Hokkaido University Graduate School of Medicine, Hokkaido, Japan.
Hiroyuki KonnoThe Japanese Society of Gastroenterological Surgery, Tokyo, Japan.
Mitsukazu GotohThe Japanese Society of Gastroenterological Surgery, Tokyo, Japan.
Masaki MoriThe Japanese Society of Gastroenterological Surgery, Tokyo, Japan.
Noboru MotomuraJapan Cardiovascular Surgery Database Organization, Tokyo, Japan.
Shinichi TakamotoJapan Cardiovascular Surgery Database Organization, Tokyo, Japan.
Yoshiki SawaDepartment of Cardiovascular Surgery, Osaka University of Medicine, Osaka, Japan.
Hiroyuki KuwanoDepartment of General Surgical Science, Graduate School of Medicine, Gunma University, Gunma, Japan.
Norihiro KokudoHepato-Biliary-Pancreatic Surgery Division, Department of Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
The Japanese Society of Gastroenterological Surgery · JPThe University of Tokyo · JPGunma University · JPHokkaido University · JPKitasato University · JPNiigata University Medical and Dental Hospital · JPOsaka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo define the effects of body mass index (BMI) on operative outcomes for both gastroenterological and cardiovascular surgery, using the National Clinical Database (NCD) of the Japanese nationwide web-based database.

methodsThe subjects of this study were 288,418 patients who underwent typical surgical procedures between January 2011 and December 2012. There were eight gastroenterological procedures, including esophagectomy, distal gastrectomy, total gastrectomy, right hemicolectomy, low anterior resection, hepatectomy of >1 segment excluding the lateral segment, pancreaticoduodenectomy, and surgery for acute diffuse peritonitis (n = 232,199); and five cardiovascular procedures, including aortic valve replacement, total arch replacement (TAR), descending thoracic aorta replacement (descending TAR), and on- or off-pump coronary artery bypass grafting (n = 56,219). The relationships of BMI with operation time and operative mortality for each procedure were investigated, using the NCD.

resultsOperation times were longer for patients with a higher BMI. When a BMI cut-off of 30 was used, the operation time for obese patients was significantly longer than that for non-obese patients, for all procedures except esophagectomy (P < 0.01). The mortality rate based on BMI revealed a U-shaped distribution, with both underweight and obese patients having high mortality rates for almost all procedures.

conclusionsThis Japanese nationwide study provides solid evidence to reinforce that both obesity and excessively low weight are factors that impact operative outcomes significantly.

Indexed as

Body Mass IndexCardiovascular Surgical ProceduresDatabases, FactualDigestive System Surgical ProceduresInternetFemaleHumansJapanMaleObesityOperative TimeRisk FactorsSurvival RateThinnessTreatment OutcomeBody mass indexNational clinical databaseNationwide web-based databaseOperation timeOperative mortality

Identifiers

PMID26263911
OpenAlexW1911804510

What OpenQuestion holds

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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.