Evidence map›Paper›PMID 27716074›Full record

ArticleBMC medical research methodology2016

Methods for network meta-analysis of continuous outcomes using individual patient data: a case study in acupuncture for chronic pain.

Pedro Saramago, Beth Woods, Helen Weatherly, Andrea Manca, Mark Sculpher, Kamran Khan, Andrew J Vickers, Hugh MacPherson

Registry-linked trialAbstract read
In one paragraph

Article in BMC medical research methodology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02976558 (Prospective Open Randomized Monocentric Two-armed Controlled Clinical Trial in Parallel Groups to Investigate the Influence of Complementary Medicine), which is not on this map. Cited by 5 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 4 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.

NCT02976558 naterminatednot on this map

Prospective Open Randomized Monocentric Two-armed Controlled Clinical Trial in Parallel Groups to Investigate the Influence of Complementary Medicine (CAM) Interventions on Quality of Life and The Treatment Process of Patients Undergoing Allogenic Stem Cell Transplantation

TypeinterventionalSponsorUniversity of Erlangen-Nürnberg Medical SchoolRan2016 to 2019Enrolled104ConditionsHematological Neoplasm, Graft-Versus-Host Disease, Depression, Stem Cell Transplant ComplicationsArmsClown theatrical Performance, Acupuncture, Music Therapy TaKeTiNa
3 · Its place in the literature

Who cites it

5 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
  2. Digital interventions in mental health: evidence syntheses and economic modelling.Health technology assessment (Winchester, England) · 2022
    Pooled it
  3. Critical Appraisal of Published Indirect Comparisons and Network Meta-Analyses of Competing Interventions for Multiple Myeloma.Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research · 2020
    Pooled it
  4. Pooled it
  5. 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

8 authors.

Pedro SaramagoCentre for Health Economics, University of York, York, UK. pedro.saramago@york.ac.uk.ORCID 0000-0001-9063-8590
Beth WoodsCentre for Health Economics, University of York, York, UK.
Helen WeatherlyCentre for Health Economics, University of York, York, UK.
Andrea MancaCentre for Health Economics, University of York, York, UK.
Mark SculpherCentre for Health Economics, University of York, York, UK.
Kamran KhanWarwick Clinical Trials Unit, Division of Health Sciences, Warwick Medical School, University of Warwick, Coventry, UK.
Andrew J VickersDepartment of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, USA.
Hugh MacPhersonDepartment of Health Sciences, University of York, York, UK.

Funding

X-RAY CRYSTALLOGRAPHYP30CA008748 · NCI · SLOAN-KETTERING INSTITUTE FOR CANCER RES · PI Hongbiao Carl Lekaye · 1985 to 2026
$347.4M
Acupuncture Trialists' Collaboration: meta-analysis of chronic pain trialsR01AT006794 · NCCIH · SLOAN-KETTERING INST CAN RESEARCH · PI VICKERS, ANDREW J · 2011 to 2015
$1.6M
Acupuncture Trialists' Collaboration: meta-analysis of chronic pain trialsR21AT004189 · NCCIH · SLOAN-KETTERING INST CAN RESEARCH · PI VICKERS, ANDREW J · 2008 to 2010
$604k
Department of Health CDF-2009-02-21NCCIH NIH HHS R01 AT006794NCCIH NIH HHS R21 AT004189NCI NIH HHS P30 CA008748
6 · The paper itself

Abstract

backgroundNetwork meta-analysis methods, which are an extension of the standard pair-wise synthesis framework, allow for the simultaneous comparison of multiple interventions and consideration of the entire body of evidence in a single statistical model. There are well-established advantages to using individual patient data to perform network meta-analysis and methods for network meta-analysis of individual patient data have already been developed for dichotomous and time-to-event data. This paper describes appropriate methods for the network meta-analysis of individual patient data on continuous outcomes.

methodsThis paper introduces and describes network meta-analysis of individual patient data models for continuous outcomes using the analysis of covariance framework. Comparisons are made between this approach and change score and final score only approaches, which are frequently used and have been proposed in the methodological literature. A motivating example on the effectiveness of acupuncture for chronic pain is used to demonstrate the methods. Individual patient data on 28 randomised controlled trials were synthesised. Consistency of endpoints across the evidence base was obtained through standardisation and mapping exercises.

resultsIndividual patient data availability avoided the use of non-baseline-adjusted models, allowing instead for analysis of covariance models to be applied and thus improving the precision of treatment effect estimates while adjusting for baseline imbalance.

conclusionsThe network meta-analysis of individual patient data using the analysis of covariance approach is advocated to be the most appropriate modelling approach for network meta-analysis of continuous outcomes, particularly in the presence of baseline imbalance. Further methods developments are required to address the challenge of analysing aggregate level data in the presence of baseline imbalance.

Indexed as

AcupunctureAnalysis of VarianceChronic PainHumansNetwork Meta-Analysis as TopicPrimary Health CareTreatment OutcomeAnalysis of covarianceContinuous outcomeEvidence synthesisHeterogeneityIndividual-patient dataMixed treatment comparisonsNetwork meta-analysis

Identifiers

PMID27716074
PMCPMC5053345

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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.