Evidence map›Paper›PMID 27737016›Full record

ArticlePloS one2016

Individualized Prediction of Changes in 6-Minute Walk Distance for Patients with Duchenne Muscular Dystrophy.

Nathalie Goemans, Marleen Vanden Hauwe, James Signorovitch, Elyse Swallow, Jinlin Song, Collaborative Trajectory Analysis Project (cTAP)

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05313295 (Effects of the Physical Therapy Treatment on Children and Adolescents With Chronic and Neurological Pathologies Affecting Their Sensorimotor Abilities.), which is not on this map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 10% 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.

NCT05313295 nacompletednot on this mapstarted 2018, after this paper: background citation

Effects of the Physical Therapy Treatment on Children and Adolescents With Chronic and Neurological Pathologies Affecting Their Sensorimotor Abilities.

TypeinterventionalSponsorUniversidad de AlmeriaRan2018 to 2023Enrolled30ConditionsNeurologic Disorder, Duchenne, Pediatric Disorder, Sensorimotor Disorder NosArmsHome-based physiotherapy, Usual Physiotherapy
3 · Its place in the literature

Who cites it

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 65 citations in OpenAlex.

  1. Neurology · 2023
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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

6 authors at 3 institutions in 2 countries.

Nathalie GoemansUniversity Hospitals Leuven, Child Neurology, Leuven, Belgium.
Marleen Vanden HauweUniversity Hospitals Leuven, Child Neurology, Leuven, Belgium.
James SignorovitchAnalysis Group, Inc., 111 Huntington Ave, 14th floor, Boston, Massachusetts, United States of America.
Elyse SwallowAnalysis Group, Inc., 111 Huntington Ave, 14th floor, Boston, Massachusetts, United States of America.
Jinlin SongAnalysis Group, Inc., 111 Huntington Ave, 14th floor, Boston, Massachusetts, United States of America.
Collaborative Trajectory Analysis Project (cTAP)
Analysis Group (United States) · USKU Leuven · BECambridge Collaborative (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDeficits in ambulatory function progress at heterogeneous rates among individuals with Duchenne muscular dystrophy (DMD). The resulting inherent variability in ambulatory outcomes has complicated the design of drug efficacy trials and clouded the interpretation of trial results. We developed a prediction model for 1-year change in the six minute walk distance (6MWD) among DMD patients, and compared its predictive value to that of commonly used prognostic factors (age, baseline 6MWD, and steroid use).

methodsNatural history data were collected from DMD patients at routine follow up visits approximately every 6 months over the course of 2-5 years. Assessments included ambulatory function and steroid use. The annualized change in 6MWD (Δ6MWD) was studied between all pairs of visits separated by 8-16 months. Prediction models were developed using multivariable regression for repeated measures, and evaluated using cross-validation.

resultsAmong n = 191 follow-up intervals (n = 39 boys), mean starting age was 9.4 years, mean starting 6MWD was 351.8 meters, and 75% had received steroids for at least one year. Over the subsequent 8-16 months, mean Δ6MWD was -37.0 meters with a standard deviation (SD) of 93.7 meters. Predictions based on a composite of age, baseline 6MWD, and steroid use explained 28% of variation in Δ6MWD (R2 = 0.28, residual SD = 79.4 meters). A broadened prognostic model, adding timed 10-meter walk/run, 4-stair climb, and rise from supine, as well as height and weight, significantly improved prediction, explaining 59% of variation in Δ6MWD after cross-validation (R2 = 0.59, residual SD = 59.7 meters).

conclusionsA prognostic model incorporating timed function tests significantly improved prediction of 1-year changes in 6MWD. Explained variation was more than doubled compared to predictions based only on age, baseline 6MWD, and steroid use. There is significant potential for composite prognostic models to inform DMD clinical trials and clinical practice.

Indexed as

Exercise TestAdolescentAge FactorsChildChild, PreschoolFollow-Up StudiesGenotypeHumansMaleModels, TheoreticalMuscular Dystrophy, DuchennePrognosisSteroidsSteroids

Identifiers

PMID27737016
PMCPMC5063281
OpenAlexW2530051463

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.