Evidence map›Paper›PMID 33758521›Full record

ArticleClinicoEconomics and outcomes research : CEOR2021

Cost-Utility Analysis of Anterior Vertebral Body Tethering versus Spinal Fusion in Idiopathic Scoliosis from a US Integrated Healthcare Delivery System Perspective.

David W Polly, A Noelle Larson, Amer F Samdani, William Rawlinson, Hannah Brechka, Alex Porteous, William Marsh, Richard Ditto

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in ClinicoEconomics and outcomes research : CEOR, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02897453 (Retrospective Review With Prospective Surveillance of Safety and Efficacy in a Clinical Series of Spinal Tethering Patients), which is not on this map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 19% 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.

NCT02897453 unknown statusnot on this map

Retrospective Review With Prospective Surveillance of Safety and Efficacy in a Clinical Series of Spinal Tethering Patients

TypeobservationalSponsorZimmer BiometRan2016 to 2022Enrolled56ConditionsAdolescent Idiopathic ScoliosisArmsThe Spinal Tethering System
3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
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

8 authors at 5 institutions in 2 countries.

David W PollyDepartment of Orthopedic Surgery, University of Minnesota, Minneapolis, MN, USA.
A Noelle LarsonMayo Clinic, Rochester, MN, USA.
Amer F SamdaniTemple University, Philadelphia, PA, USA.
William RawlinsonCostello Medical Consulting Ltd, Cambridge, UK.
Hannah BrechkaCostello Medical Consulting Ltd, Cambridge, UK.
Alex PorteousCostello Medical Consulting Ltd, Cambridge, UK.
William MarshCostello Medical Consulting Ltd, Cambridge, UK.
Richard DittoZimmer Biomet, Warsaw, IN, USA.ORCID 0000-0003-2738-7746
Costello Medical Consulting (United Kingdom) · GBMayo Clinic in Arizona · USTemple University · USUniversity of Minnesota · USZimmer Biomet (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAnterior vertebral body tethering (VBT) is a non-fusion, minimally invasive, growth-modulating procedure with some early positive clinical outcomes reported in pediatric patients with idiopathic scoliosis (IS). VBT offers potential health-related quality of life (HRQoL) benefits over spinal fusion in allowing patients to retain a greater range of motion after surgery. We conducted an early cost-utility analysis (CUA) to compare VBT with fusion as a first-choice surgical treatment for skeletally immature patients (age >10 years) with moderate to severe IS, who have failed nonoperative management, from a US integrated healthcare delivery system perspective. PATIENTS AND

methodsThe CUA uses a Markov state transition model, capturing a 15-year period following index surgery. Transition probabilities, including revision risk and subsequent fusion, were based on published surgical outcomes and an ongoing VBT observational study (NCT02897453). Patients were assigned utilities derived from published patient-reported outcomes (PROs; SRS-22r mapped to EQ-5D) following fusion and the above VBT study. Index and revision procedure costs were included. Probabilistic (PSA) and deterministic sensitivity analyses (DSA) were performed.

resultsVBT was associated with higher costs but also higher quality-adjusted life years (QALYs) than fusion (incremental costs: $45,546; QALYs gained: 0.54). The subsequent incremental cost-effectiveness ratio for VBT vs fusion was $84,391/QALY gained. Mean PSA results were similar to the base case, indicating that results were generally robust to uncertainty. The DSA indicated that results were most sensitive to variations in utility values.

conclusionThis is the first CUA comparing VBT with fusion in pediatric patients with IS and suggests that VBT may be a cost-effective alternative to fusion in the US, given recommended willingness-to-pay thresholds ($100,000-$150,000). The results rely on HRQoL benefits for VBT compared with fusion. For improved model accuracy, further analyses with longer-term PROs for VBT, and comparative effectiveness studies, would be needed.

Indexed as

cost-effective analysisidiopathic scoliosispediatricspinal fusionvertebral body tethering

Identifiers

PMID33758521
PMCPMC7979350
OpenAlexW3138107519

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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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.