reliability properties of the un-moving-task, an … · 5ap-hp, hôpital raymond poincaré, service...
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ReliabilitypropertiesoftheUN-moving-task,anecologicalassessmentofUnilateralNeglectinpatientswithacquiredbraininjury:
Preliminaryresults
1SorbonneUniversités,UPMCUnivParis06,Handicapcognitifetréadaptation(HanCRe),Paris,France;2CentreforInterdisciplinary Research inRehabilitation ofGreater Montreal (CRIR),MontréalQC,Canada;3LaboratoryforAdultDevelopmentandCognitiveAging,DepartmentofPsychology,ConcordiaUniversity,MontréalQC,Canada;4InstitutNazarethetLouis-BrailleoftheCISSSdelaMontérégie-Centre,LongueuilQC,Canada;
5AP-HP,HôpitalRaymondPoincaré,ServicedeMPR,Garches,France;6HANDIReSP,UniversitédeVersaillesSaint-Quentin,France;7UniversitédeMontréal,MontréalQC,Canada;8InstitutuniversitairesurlaréadaptationendéficiencephysiquedeMontréal(IURDPM)oftheCIUSSSduCentre-Sud-de-l’Île-de-Montréal,MontréalQC,Canada.
FrédériquePoncet1-4,NoémieDuclos2,7,8,WalterCybis2,4,PhilippeAzouvi5,6,CyrilDuclos2,7,8 &Marie-ChantalWanet-Defalque2,4,7
Unilateralneglect(UN)isafrequentprobleminindividualswithbraininjury.UNhasbeendescribedasaperipersonal orextrapersonaldisorder.AlthoughmanytasksassessUNinperipersonal space,neglectinextrapersonal orfarspaceisrarelyassessed.TheUN-moving-task,anecologicaltestofUNinarealcorridorandinvolvingmulti-tasking(seeFigure1),wasdevelopedandexhibitsexcellentdiscriminantvalidity(Poncetetal.2012).However,otherimportantpsychometricpropertiesofthistesthaveyettobestudied.
Tofurtherevaluatethepsychometricpropertiesofthistest,thisstudyexploredreliabilityoftheUN-moving-task.
Figure1.UN-Moving-Task
INTRODUCTION
OBJECTIVE
RESULTS
CONCLUSION
Correspondence:frederiqueponcet@gmail.com
Preliminaryresultswerecalculatedfromacohortof29participantsrecruitedfromtheIURDPM(Gingras-Lindsay-de-Montréal),including18participantswithstroke(12participantswithrightstroke(9men)and6withhomonymoushemianopia;meanage45.2yrs.,SD=18.4),and14controlsubjects(meanage45.7yrs.,SD=18.0;6men).
Test-retestreliabilityForallparticipants(n=29)andforthepopulationwithstrokeandUN,thetest-retestreliabilitywasgood(ICC=0.82and0.84) (table1).Forcontrolsubjects(n=14),thetest-retestreliabilitywasaverage(ICC=0.58).
InterraterreliabilityInterraterreliabilitywasexcellent(ICC=0.99)forallparticipants(table2).
Patientswithaunilateralhemisphericbrainvascularlesion(leftorright)withUNwererecruitedintworehabilitationunits(inParis,France&MontréalQC,Canada).Aconveniencesampleofhealthymatchedcontrolswasrecruited.IntheUN-moving-task,participantswereaskedtogothroughacorridor(2.30meterswide,20meterslong),whilepointingateachofthe18magazinecoversdisplayed,distributedat3levelsofheight,onthetwowalls.
Twoexaminersrecordedthenumberofomissionsoneachside.OneOTandtwophysiatristsparticipatedasratersinthisstudy;theywerefamiliarwiththeuseoftheUN-Moving-Task.DuringthetaskallparticipantsworeanEyeTrackingTobii,recordingwhattheireyecaptures(i.e.magazinecovers)(seeFigure2).
Test-retestreliabilitywasdeterminedbasedonscoresobtainedbythesamejudgein2evaluations20to30minutesapart,using Intra-ClassCoefficients(ICC,onefactorrandom).There-testwasperformedbytheparticipantsinasecondcorridoroftherehabilitationunit.
Inter-raterreliabilitywasdeterminedbycomparingscoresobtainedbythe2examinersinthesametest,usingICC.
METHOD
Test-retestreliability
Population ICC 95%CIAll participants (n=29) 0.82 0.497;0.923Stroke population (n=18) 0.84 0.534;0.945Control subjects (n=14) 0.58 -0.561;0.579
Interraterreliability
Population ICC 95%CIAll participants (n=29) 0.99 0.992;0.998Stroke population (n=18) 0.99 0.994;0.999Control subjects 0.99 0.958;0.996
Table1.Omissionofmagazinecovers.Test-retest Table2.Omissionofmagazinecovers.Interraterreliability
Legend:ICC: IntraClasscorrelation95CI: ConfidenceInternal
Test-retestreliabilitywasgoodforparticipantswithstroke,unlikeforcontrolsubjects.TheseresultscanprobablybeexplainedbythefactthatUNisanobservabledeficitinattentiontoandawarenessofonesideofthefieldofvision.Thus,participantswithUNmaynotbeabletoadapttothetestaseasilyasthecontrolsubjects.Interraterreliabilitywasexcellent,whichcanbeexplainedbythefactthatthetestisstandardized,simpletoimplement, anditsratingsystemisdichotomous(seen/notseen).IftheresultsobtainedfromthereliabilityoftheUN-moving-taskfindingsareconfirmedwithalargercohort(n=50),aswell asintwolocations,itwillbeausefulclinicaltooltoevaluateUNonthemove.
Figure2.ExamplewhateyecaptureswithEyeTrackingTobii
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