Evidence map›Paper›PMID 31414297›Full record

SynthesisObesity surgery2020

Changes in Bone Metabolism After Sleeve Gastrectomy Versus Gastric Bypass: a Meta-Analysis.

Zhao Tian, Xin-Tong Fan, Shi-Zhen Li, Ting Zhai, Jing Dong

Abstract readComparative StudyMeta-Analysis
PubMed Publisher
In one paragraph

Synthesis in Obesity surgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 2 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

26 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Fracture risk following bariatric surgery: a systematic review and meta-analysis.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2022
    Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Observational
  11. The mediating role of bariatric surgery in the metabolic relationship between parathyroid hormone and 25-hydroxyvitamin D.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2022
    Article
  12. Review
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  15. Review
  16. Article
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  19. Article
  20. Impact of sleeve gastrectomy on hip structural analysis in adolescents and young adults with obesity.Surgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery · 2020
    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

5 authors.

Zhao TianClinical Medicine Department, Medical College, Qingdao University, Qingdao, Shandong, China.
Xin-Tong FanClinical Medicine Department, Medical College, Qingdao University, Qingdao, Shandong, China.
Shi-Zhen LiPreventive Medicine Department, School of Public Health, Qingdao University, Qingdao, Shandong, China.
Ting ZhaiPreventive Medicine Department, School of Public Health, Qingdao University, Qingdao, Shandong, China.
Jing DongSpecial Medicine Department, Medical College, Qingdao University, Qingdao, China. dongjing6@hotmail.com.ORCID 0000-0002-7027-9567

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGastric bypass (GB) and sleeve gastrectomy (SG) are two common types of bariatric surgery that carry many potential complications. Among these complications, bone metabolism-related diseases have attracted substantial attention; however, no meta-analysis of them has been performed to date.

methodsWe searched PubMed, Web of Science, The Cochrane Library, and Embase to identify relevant studies published before January 2019. The following indicators were evaluated: serum parathyroid hormone (PTH), calcium, phosphorus and 25-hydroxyvitamin D levels, body mass index (BMI), and bone mineral density (BMD).

resultsThirteen studies met our inclusion criteria. Overall results showed that patients undergoing GB had lower levels of 25-hydroxyvitamin D (MD = - 1.85, 95% CI (- 3.32, - 0.39) P = 0.01) and calcium (MD = - 0.15, 95% CI (- 0.24, - 0.07) P = 0.0006) as well as higher levels of PTH (MD = 3.58, 95% CI (0.61, 7.09) P = 0.02) and phosphorus (MD = 0.22, 95% CI (0.10, 0.35) P = 0.0005). The results of BMI and BMD were comparable in each group.

conclusionOur meta-analysis suggested that obese patients undergoing GB had lower levels of serum calcium and 25-hydroxyvitamin D as well as higher levels of serum phosphorus and PTH. To prevent postoperative bone metabolism-related diseases, appropriate postoperative interventions should be undertaken for particular surgical procedures.

Indexed as

GastrectomyGastric BypassBariatric SurgeryBody Mass IndexBone and BonesBone DensityCalcifediolCalciumHumansObesity, MorbidParathyroid HormonePostoperative ComplicationsPostoperative PeriodVitamin D25-hydroxyvitamin DCalcifediolCalciumParathyroid HormoneVitamin DBone metabolismBone mineral densityGastric bypassMeta-analysisSleeve gastrectomy

Identifiers

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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.