Trial reportSurgical endoscopy2014
Impact of Roux-en-Y gastric bypass versus sleeve gastrectomy on vitamin D metabolism: short-term results from a prospective randomized clinical trial.
Trial report in Surgical endoscopy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 34 papers, 14 of them syntheses that pooled 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.
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.
Laparoscopic Sleeve Gastrectomy Versus Roux-en-Y Gastric Bypass for Morbidly Obese Patients: a Prospective Randomized Clinical Trial
An Evaluation of the Outcomes of Bariatric Surgery - a Cohort Study Internal Hernia After Laparoscopic Roux-en-Y Gastric Bypass: an Evaluation of the Impact on the Postoperative Course and a Quality of Life Case-control Study
Who cites it
34 citing papers in PubMed, 14 syntheses or guidelines pooled it, 70 citations in OpenAlex.
- The effect of obesity interventions on male fertility: a systematic review and meta-analysis.Human reproduction update · 2026Pooled it
- Changes in Nutritional Outcomes After Roux-en-Y Gastric Bypass: A Systematic Review and Meta-Analysis.Obesity surgery · 2024Pooled it
- Randomized controlled trials comparing gastric bypass, gastric band, and sleeve gastrectomy: A systematic review examining validity and applicability to wider clinical practice.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2024Pooled it
- Vitamin D status and supplementation before and after Bariatric Surgery: Recommendations based on a systematic review and meta-analysis.Reviews in endocrine & metabolic disorders · 2023Pooled it
- A Systematic Review and Meta-Analysis of Vitamin D Status of Patients with Severe Obesity in Various Regions Worldwide.Obesity facts · 2023Pooled it
- Changes in bone mineral density after bariatric surgery in patients of different ages or patients with different postoperative periods: a systematic review and meta-analysis.European journal of medical research · 2022Pooled it
- EAES rapid guideline: systematic review, network meta-analysis, CINeMA and GRADE assessment, and European consensus on bariatric surgery-extension 2022.Surgical endoscopy · 2022Guideline
- Changes in Nutritional Outcomes After Sleeve Gastrectomy: a Systematic Review and Meta-analysis.Obesity surgery · 2022Pooled it
- In Terms of Nutrition, the Most Suitable Method for Bariatric Surgery: Laparoscopic Sleeve Gastrectomy or Roux-en-Y Gastric Bypass? A Systematic Review and Meta-analysis.Obesity surgery · 2020Pooled it
- Changes in Bone Metabolism After Sleeve Gastrectomy Versus Gastric Bypass: a Meta-Analysis.Obesity surgery · 2020Pooled it
- Ongoing Inconsistencies in Weight Loss Reporting Following Bariatric Surgery: a Systematic Review.Obesity surgery · 2019Pooled it
- Hypovitaminosis D in bariatric surgery: A systematic review of observational studies.Metabolism: clinical and experimental · 2016Pooled it
- Laparoscopic Roux-en-Y Gastric Bypass Versus Laparoscopic Sleeve Gastrectomy to Treat Morbid Obesity-Related Comorbidities: a Systematic Review and Meta-analysis.Obesity surgery · 2016Pooled it
- Surgery for weight loss in adults.The Cochrane database of systematic reviews · 2014Pooled it
- Prevalence of Morphometric Vertebral Fractures After Bariatric Surgery and Its Relationship with Bone Mineral Density and Bone Markers.Obesity surgery · 2024Article
- Observational
- Secondary Hyperparathyroidism, Bone Density, and Bone Turnover After Bariatric Surgery: Differences Between Roux-en-Y Gastric Bypass and Sleeve Gastrectomy.Obesity surgery · 2021Article
- Preventing calcium and vitamin D deficiencies following weight loss and metabolic surgery.BMC surgery · 2021Article
- Secondary Hyperparathyroidism in Obese Patients Post Sleeve Gastrectomy.Diabetes, metabolic syndrome and obesity : targets and therapy · 2021Article
- Vertical Sleeve Gastrectomy Has Better Weight Evolution and Serum Concentrations of Vitamin D when Compared with Roux-Y Gastric Bypass.Obesity surgery · 2020Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo assess postoperative outcomes of sleeve gastrectomy (SG) versus Roux-en-Y gastric bypass (RYGB). Short-term results on vitamin D and parathormone (PTH) metabolism are reported.
methodsOne hundred patients were randomly assigned to RYGB (n = 45) or SG (n = 55). Vitamin D, PTH, and calcium were assessed at inclusion and after 1, 3, 6, and 12 months (M1, M3, M6, and M12). Eighty-eight patients completed 1-year follow-up.
resultsMean postoperative excess weight loss (%EWL) at M1, M3, M6, and M12 was 25.39, 43.47, 63.75, and 80.38 % versus 25.25, 51.32, 64.67, and 82.97 % in RYGB and SG, respectively. Vitamin D values were statistically significantly higher after SG compared to RYGB at M3 (61.57 pmol/L, standard deviation [SD] 14.29 vs. 54.81 SD 7.65; p = 0.01) and M12 (59.83 pmol/L, SD 6.41 vs. 56.15 SD 8.18; p = 0.02). Vitamin D deficiency rate decreased from 84.62 to 35 % at M6 (p = 0.04) and 48 % at M12 (p = 0.01) in the SG group, while there was no significant improvement in the RYGB group. Serum parathyroid hormone (sPTH) level was decreased significantly in the SG group by M3 (44.8 ng/L vs. 28.6; p = 0.03), M6 (44.9 ng/L vs. 25.8; p = 0.017), and M12 (41.4 ng/L vs. 20.5; p = 0.017). Secondary hyperparathyroidism rate was 20.83 and 24 % at M1 (p = 1), 16.67 and 8 % at M3 (p = 0.41), 14.29 and 0 % at M6 (p = 0.08), and 15 and 0 % at M12 (p = 0.23) in the RYGB and SG groups, respectively.
conclusionsPatients after RYGB had a significantly higher postoperative vitamin D deficiency and higher sPTH levels than after SG.
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Registered trials
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.