Evidence map›Paper›PMID 26464244›Full record

SynthesisObesity surgery2016

Relationship Between Bariatric Surgery and Bone Mineral Density: a Meta-analysis.

Byung-Joon Ko, Seung Kwon Myung, Kyung-Hwan Cho, Yong Gyu Park, Sin Gon Kim, Do Hoon Kim, Seon Mee Kim

Abstract readMeta-AnalysisReview
PubMed Publisher
In one paragraph

Synthesis in Obesity surgery, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 4 pooled it
6.5field-weighted citation impact, top 3% 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

38 citing papers in PubMed, 4 syntheses or guidelines pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Changes in volumetric bone mineral density and bone quality after Roux-en-Y gastric bypass: A meta-analysis with meta-regression.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2022
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  6. Longitudinal variations of paraspinal muscle fatty infiltration in obese patients after bariatric surgery.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
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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

7 authors at 4 institutions in 2 countries.

Byung-Joon KoTotal Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, 100-742, South Korea.
Seung Kwon MyungMolecular Epidemiological Branch, Research Institute, National Cancer Center, Goyang, 410-769, South Korea.
Kyung-Hwan ChoDepartment of Family Medicine, College of Medicine, Korea University, Seoul, 136-705, South Korea.
Yong Gyu ParkDepartment of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, 137-701, South Korea.
Sin Gon KimDivision of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Korea University, Seoul, 136-705, South Korea.
Do Hoon KimDepartment of Family Medicine, College of Medicine, Korea University, Seoul, 136-705, South Korea.
Seon Mee KimDepartment of Family Medicine, College of Medicine, Korea University, Seoul, 136-705, South Korea. ksmpdh@korea.ac.kr.
Korea University · KRCatholic University of Korea · KRNational Cancer Center · USSungkyunkwan University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA meta-analysis regarding bone loss after bariatric surgery, designed to compare surgical and nonsurgical groups, has not yet been performed. Therefore, we performed a meta-analysis to compare the differences between bariatric surgical groups and nonoperated controls with regard to bone mineral density.

methodsIn March 2015, we performed a review of the literature using PubMed, EMBASE, and the Cochrane Library. The search focused on retrospective and prospective studies, including but not limited to randomized studies published in English.

resultsAmong 1299 studies that were initially screened, ten met the selection criteria. For all types of bariatric surgery, bone density at the femoral neck was lower in the surgical group than in the nonsurgical control group (mean difference [MD] -0.05 g/cm(2); 95 % confidence interval [CI], -0.07 to -0.02; p = 0.001); no difference in bone density was found between the two groups at the lumbar spine (MD -0.01 g/cm(2); 95 % CI -0.07 to 0.05; p = 0.661). The analysis of Roux-en-Y gastric bypass showed similar results.

conclusionBone density at the femoral neck decreased after bariatric surgery, compared to that in nonsurgical controls, whereas bone density at the lumbar spine did not show a difference between groups. Further larger scale studies with comparative nonsurgical controls are warranted to overcome the heterogeneity among studies in this analysis and to add evidence of possible bone loss subsequent to bariatric surgical procedures.

Indexed as

Bone DensityAbsorptiometry, PhotonBariatric SurgeryFemur NeckHumansLumbar VertebraeObesity, MorbidOsteoporosisProspective StudiesRetrospective StudiesBariatric surgeryBone densityDXAMeta-analysis

Identifiers

PMID26464244
OpenAlexW1956600567

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.