2023
Development and validation of a model predicting mild stroke severity on admission using electronic health record data
Waddell K, Myers L, Perkins A, Sico J, Sexson A, Burrone L, Taylor S, Koo B, Daggy J, Bravata D. Development and validation of a model predicting mild stroke severity on admission using electronic health record data. Journal Of Stroke And Cerebrovascular Diseases 2023, 32: 107255. PMID: 37473533, DOI: 10.1016/j.jstrokecerebrovasdis.2023.107255.Peer-Reviewed Original ResearchMeSH KeywordsElectronic Health RecordsHumansIschemic StrokeLogistic ModelsSeverity of Illness IndexStrokeConceptsInitial stroke severityStroke severityElectronic health record dataHealth record dataSevere strokeIschemic strokeStroke careSample patientsMortality risk stratificationRecord dataVeterans Affairs hospitalMild stroke severityMultiple logistic regressionObservational cohortStroke outcomeIndependent predictorsRisk stratificationEHR data elementsPrimary analysisLogistic regressionStrokeValidation sampleSeverityPotent modifierEHR data
2018
Suicidal thought and behavior in individuals with restless legs syndrome
Para KS, Chow CA, Nalamada K, Kakade VM, Chilakamarri P, Louis ED, Koo BB. Suicidal thought and behavior in individuals with restless legs syndrome. Sleep Medicine 2018, 54: 1-7. PMID: 30529070, DOI: 10.1016/j.sleep.2018.09.019.Peer-Reviewed Original ResearchConceptsRestless legs syndromeInternational RLS Study Group Severity ScaleLifetime suicidal ideationLifetime depression historySuicidal ideationDepression historyLegs syndromeControl participantsBrief Lifetime Depression ScaleCambridge-Hopkins RLS questionnairePotential demographic confoundersRisk of suicideStepwise logistic regressionRLS sufferersRLS questionnaireRLS diagnosisRLS severityDepression ScaleSuicidal Behaviors QuestionnaireLifetime depressionSeverity ScaleDemographic confoundersSuicidal thoughtsLogistic regressionDepression
2017
Polysomnographic phenotypes and their cardiovascular implications in obstructive sleep apnoea
Zinchuk AV, Jeon S, Koo BB, Yan X, Bravata DM, Qin L, Selim BJ, Strohl KP, Redeker NS, Concato J, Yaggi HK. Polysomnographic phenotypes and their cardiovascular implications in obstructive sleep apnoea. Thorax 2017, 73: 472. PMID: 28935698, PMCID: PMC6693344, DOI: 10.1136/thoraxjnl-2017-210431.Peer-Reviewed Original ResearchMeSH KeywordsAcute Coronary SyndromeAgedCardiovascular DiseasesCluster AnalysisCross-Sectional StudiesFemaleHumansIschemic Attack, TransientLongitudinal StudiesMaleMiddle AgedMortalityPhenotypePolysomnographyProportional Hazards ModelsRisk AssessmentSeverity of Illness IndexSleep Apnea, ObstructiveStrokeConceptsObstructive sleep apnoeaCardiovascular outcomesPolysomnographic featuresSleep apnoeaPolysomnographic dataIncident transient ischemic attackUS Veteran cohortTransient ischemic attackAcute coronary syndromeAdverse cardiovascular outcomesPeriodic limb movementsOSA severity classificationPolysomnographic phenotypeCoronary syndromeIschemic attackCardiovascular implicationsOSA phenotypesOSA evaluationPathophysiological domainsPoor sleepMild/Patient clustersVeteran cohortSurvival analysisCombined outcome
2016
The Association between Nocturnal Cardiac Arrhythmias and Sleep-Disordered Breathing: The DREAM Study.
Selim BJ, Koo BB, Qin L, Jeon S, Won C, Redeker NS, Lampert RJ, Concato JP, Bravata DM, Ferguson J, Strohl K, Bennett A, Zinchuk A, Yaggi HK. The Association between Nocturnal Cardiac Arrhythmias and Sleep-Disordered Breathing: The DREAM Study. Journal Of Clinical Sleep Medicine 2016, 12: 829-37. PMID: 26951420, PMCID: PMC4877315, DOI: 10.5664/jcsm.5880.Peer-Reviewed Original ResearchMeSH KeywordsArrhythmias, CardiacCohort StudiesCross-Sectional StudiesFemaleHumansMaleMiddle AgedPolysomnographyProspective StudiesSeverity of Illness IndexSleep Apnea SyndromesVeteransConceptsSleep-disordered breathingNocturnal cardiac arrhythmiasIntraventricular conduction delayApnea-hypopnea indexCardiac arrhythmiasTwo-fold oddsModerate-severe sleep-disordered breathingSeverity of SDBSevere sleep-disordered breathingComplex ventricular ectopyMultiple cardiovascular comorbiditiesObstructive respiratory eventsClinic-based populationCross-sectional analysisCardiovascular comorbiditiesSDB patientsVentricular ectopySDB severityRespiratory eventsUnadjusted oddsSupraventricular tachycardiaCardiovascular diseaseArrhythmia subtypesArrhythmia riskConduction delayRestless Legs Syndrome and Depression: Effect Mediation by Disturbed Sleep and Periodic Limb Movements
Koo BB, Blackwell T, Lee HB, Stone KL, Louis ED, Redline S, Group O. Restless Legs Syndrome and Depression: Effect Mediation by Disturbed Sleep and Periodic Limb Movements. American Journal Of Geriatric Psychiatry 2016, 24: 1105-1116. PMID: 27526989, PMCID: PMC5241001, DOI: 10.1016/j.jagp.2016.04.003.Peer-Reviewed Original ResearchConceptsSevere restless legs syndromeRestless legs syndromePeriodic limb movementsDepressive symptomsLegs syndromeSleep disturbancesMild restless legs syndromeFurther adjustmentAssociation of RLSLimb movementsCardiovascular risk factorsApnea-hypopnea indexBody mass indexPotential mediatorsCross-sectional analysisEffect sizeDopaminergic medicationMass indexOsteoporotic fracturesPLMS indexDisturbed sleepRisk factorsGDS scoresPhysical activitySleep efficiencyObservational Study of Obstructive Sleep Apnea in Wake-Up Stroke: The SLEEP TIGHT Study
Koo BB, Bravata DM, Tobias LA, Mackey JS, Miech EJ, Matthias MS, Stahl SM, Sico JJ, Fragoso C, Williams LS, Lampert R, Qin L, Yaggi HK. Observational Study of Obstructive Sleep Apnea in Wake-Up Stroke: The SLEEP TIGHT Study. Cerebrovascular Diseases 2016, 41: 233-241. PMID: 26811929, DOI: 10.1159/000440736.Peer-Reviewed Original ResearchMeSH KeywordsAgedBiomarkersBlood PressureBlood Pressure Monitoring, AmbulatoryBrain IschemiaChi-Square DistributionCholesterol, LDLConnecticutCross-Sectional StudiesFemaleHumansIndianaIschemic Attack, TransientLogistic ModelsMaleMiddle AgedOdds RatioOxygenPolysomnographyPrevalenceRandomized Controlled Trials as TopicRisk FactorsSeverity of Illness IndexSex FactorsSleepSleep Apnea, ObstructiveStrokeSympathetic Nervous SystemWakefulnessConceptsObstructive sleep apneaDiastolic blood pressureSevere obstructive sleep apneaLow-density lipoproteinBlood pressureSleep apneaSerum catecholaminesAmbulatory blood pressure monitoringBaseline diastolic blood pressureMean body mass indexB-type natriuretic peptideHigher diastolic blood pressureMore oxygen desaturationTransient ischemic attackIschemic stroke patientsAmbulatory blood pressureHistory of strokeBody mass indexC-reactive proteinBlood pressure monitoringOxygen desaturation eventsGender-stratified analysesCross-sectional analysisIschemic attackOSA frequency
2015
Quality measures for the care of adult patients with restless legs syndrome.
Trotti LM, Goldstein CA, Harrod CG, Koo BB, Sharon D, Zak R, Chervin RD. Quality measures for the care of adult patients with restless legs syndrome. Journal Of Clinical Sleep Medicine 2015, 11: 293-310. PMID: 25700882, PMCID: PMC4346652, DOI: 10.5664/jcsm.4550.Peer-Reviewed Original ResearchMeSH KeywordsAdultHumansQuality Indicators, Health CareQuality of Health CareRestless Legs SyndromeSeverity of Illness IndexSleep Medicine SpecialtyTreatment OutcomeConceptsRestless legs syndromeAccuracy of diagnosisAdult patientsLegs syndromeTreatment complicationsSymptom severityCare of patientsCommon sleep disorderEvidence-based treatmentsPotential side effectsQuality measure developmentRLS managementIron storesSleep disordersControl disordersDiagnostic criteriaSide effectsBetter outcomesRoutine assessmentAmerican AcademySleep medicinePatientsOutcomesSeverityComplications