Download - Reliability properties of the UN-moving-task, an … · 5AP-HP, Hôpital Raymond Poincaré, Service de MPR, Garches, France; 6HANDIReSP, Université de Versailles Saint-Quentin, France;

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:[email protected]

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