2023
Cognitive training for children with ADHD: composite cognitive score outcome in a randomized controlled trial
Bikic A, Dalsgaard S, Pittman B, Leckman J, Wexler B. Cognitive training for children with ADHD: composite cognitive score outcome in a randomized controlled trial. Nordic Journal Of Psychiatry 2023, 78: 87-91. PMID: 37905332, DOI: 10.1080/08039488.2023.2270954.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderCognitive trainingDeficit/hyperactivity disorderComposite cognition scoreSessions of trainingCognitive functioningHyperactivity disorderCognitive improvementCognition scoresTraining sessionsMixed resultsFrequency of trainingTrainingChildrenSessionsIntervention groupCognitionInterventionFunctioningPost Hoc AnalysisScore outcomesControl groupPrevious studiesDisordersOutcomes
2022
Social and Adaptive Functioning in Tourette Syndrome
Sukhodolsky D, Kalvin C, Artukoğlu B, Eicher V, Leckman J. Social and Adaptive Functioning in Tourette Syndrome. 2022, 391-404. DOI: 10.1093/med/9780197543214.003.0023.Peer-Reviewed Original ResearchAdaptive functioningAttention-deficit/hyperactivity disorderTourette syndromeThorough clinical assessmentCo-occurring disordersHyperactivity disorderQuality of lifePsychosocial interventionsClinical assessmentBehavioral disordersSymptom severityFunctioningStandardized ratingsDisordersActive investigationImpairmentSyndromeSeverity
2020
An integrated program of computer-presented and physical cognitive training exercises for children with attention-deficit/hyperactivity disorder
Wexler BE, Vitulano LA, Moore C, Katsovich L, Smith SD, Rush C, Grantz H, Dong J, Leckman JF. An integrated program of computer-presented and physical cognitive training exercises for children with attention-deficit/hyperactivity disorder. Psychological Medicine 2020, 51: 1524-1535. PMID: 32090720, DOI: 10.1017/s0033291720000288.Peer-Reviewed Original ResearchConceptsAttention deficit hyperactivity disorderExperimental medicine approachTAU groupMedicine approachHyperactivity disorderWeeks of treatmentCombined subtypeDiagnosis of ADHDClinical trial designHyperactive-impulsive subtypeAttention-deficit/hyperactivity disorderCross-over designDeficit hyperactivity disorderClinical improvementClinical symptomsRandomized crossCognitive dysfunctionCT groupPathophysiological heterogeneityCONSORT recommendationsTrial designResponse rateChange scoresSubtypesTargeted pathology
2018
Attention and executive functions computer training for attention-deficit/hyperactivity disorder (ADHD): results from a randomized, controlled trial
Bikic A, Leckman JF, Christensen TØ, Bilenberg N, Dalsgaard S. Attention and executive functions computer training for attention-deficit/hyperactivity disorder (ADHD): results from a randomized, controlled trial. European Child & Adolescent Psychiatry 2018, 27: 1563-1574. PMID: 29644473, DOI: 10.1007/s00787-018-1151-y.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderCognitive functionMultiple cognitive functionsComputer training programCognitive trainingHyperactivity disorderComputer trainingTraining programOutcome measuresFunctional outcome measuresIntervention groupTrainingChildrenAttentionMeasuresSecondary outcome measuresDate of registrationControl groupSignificant beneficial effectDisordersInterventionSingle-blind trialSignificant effectOutcomesTrials
2017
Risk of Irritability With Psychostimulant Treatment in Children With ADHD: A Meta-Analysis.
Stuckelman ZD, Mulqueen JM, Ferracioli-Oda E, Cohen SC, Coughlin CG, Leckman JF, Bloch MH. Risk of Irritability With Psychostimulant Treatment in Children With ADHD: A Meta-Analysis. The Journal Of Clinical Psychiatry 2017, 78: e648-e655. PMID: 28682529, DOI: 10.4088/jcp.15r10601.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderRisk of irritabilitySide effectsPsychostimulant medicationPsychostimulant treatmentAmphetamine derivativesPlacebo-controlled trialCommon side effectsStratified subgroup analysisEffects of amphetamineTreatment of childrenDuration of usePsychostimulant classesEligible trialsMedical comorbiditiesHead trialsSubgroup analysisRisk ratioRelative riskSTUDY SELECTIONEffective treatmentDATA SOURCESPubMed searchTrial designStimulant typeA double-blind randomized pilot trial comparing computerized cognitive exercises to Tetris in adolescents with attention-deficit/hyperactivity disorder
Bikic A, Christensen TØ, Leckman JF, Bilenberg N, Dalsgaard S. A double-blind randomized pilot trial comparing computerized cognitive exercises to Tetris in adolescents with attention-deficit/hyperactivity disorder. Nordic Journal Of Psychiatry 2017, 71: 455-464. PMID: 28598701, DOI: 10.1080/08039488.2017.1328070.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderComputerized cognitive exercisesCognitive exercisesHyperactivity disorderComputer game TetrisSignificant intra-group changesADHD symptom measuresSignificant group differencesLarge effect sizesDouble-blind randomized pilot trialBrain trainingSustained attentionCognitive testsGame TetrisMotivation questionnaireHome-based interventionGroup differencesSignificant beneficial effectRandomized pilot trialActive placeboIntra-group changesTetrisAdolescentsEffect sizeBeneficial effectsMortality risk in a nationwide cohort of individuals with tic disorders and with tourette syndrome
Meier SM, Dalsgaard S, Mortensen PB, Leckman JF, Plessen KJ. Mortality risk in a nationwide cohort of individuals with tic disorders and with tourette syndrome. Movement Disorders 2017, 32: 605-609. PMID: 28339122, DOI: 10.1002/mds.26939.Peer-Reviewed Original ResearchConceptsTic disordersTourette syndromePremature deathMortality riskProspective cohort studyMortality rate ratiosComorbid attention-deficit/hyperactivity disorderAttention-deficit/hyperactivity disorderExclusion of individualsCohort studyObsessive-compulsive disorderClinical significancePsychiatric disordersPaternal ageSubstance abuseSyndromeHyperactivity disorderDisordersRate ratioDeathRiskCalendar yearAgeIndividualsCliniciansGilles de la Tourette syndrome
Robertson MM, Eapen V, Singer HS, Martino D, Scharf JM, Paschou P, Roessner V, Woods DW, Hariz M, Mathews CA, Črnčec R, Leckman JF. Gilles de la Tourette syndrome. Nature Reviews Disease Primers 2017, 3: 16097. PMID: 28150698, DOI: 10.1038/nrdp.2016.97.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderFunctional brain anomaliesObsessive-compulsive disorderChildhood-onset neurodevelopmental disorderPathogenesis of GTSHyperactivity disorderMultiple common risk variantsNeurobiological dataConsiderable social stigmaNeural circuit levelTourette syndromeBehavioral methodsGilles deNeurodevelopmental disordersYears of ageFuture researchSocial stigmaBrain anomaliesPhonic ticsNeuropsychiatric disordersTargeted interventionsClinical phenotypeDisordersFunctional neurosurgeryDe novo mutationsTics and Tourette Syndrome
Sukhodolsky D, Gladstone T, Kaushal S, Piasecka J, Leckman J. Tics and Tourette Syndrome. Autism And Child Psychopathology Series 2017, 241-256. DOI: 10.1007/978-3-319-71210-9_14.ChaptersHabit reversal trainingTourette syndromeBehavioral interventionsPathophysiology of TSComprehensive clinical careComprehensive Behavioral InterventionCore clinical characteristicsAttention-deficit/hyperactivity disorderModerators of responseCo-occurring conditionsDisruptive behavior disordersClinical characteristicsChronic motorClinical efficacyTic expressionVocal ticsClinical recommendationsCo-occurring psychopathologyClinical careTic severityTreatment approachesPremonitory urgesBehavior disorderAnxiety disordersDiagnostic assessment
2016
N-Acetylcysteine in the Treatment of Pediatric Tourette Syndrome: Randomized, Double-Blind, Placebo-Controlled Add-On Trial
Bloch MH, Panza KE, Yaffa A, Alvarenga PG, Jakubovski E, Mulqueen JM, Landeros-Weisenberger A, Leckman JF. N-Acetylcysteine in the Treatment of Pediatric Tourette Syndrome: Randomized, Double-Blind, Placebo-Controlled Add-On Trial. Journal Of Child And Adolescent Psychopharmacology 2016, 26: 327-334. PMID: 27027204, PMCID: PMC6445198, DOI: 10.1089/cap.2015.0109.Peer-Reviewed Original ResearchConceptsBenefit of NACEfficacy of NACYale Global Tic Severity ScaleAttention-deficit/hyperactivity disorderObsessive-compulsive disorderTourette syndromeN-acetylcysteineObsessive-compulsive spectrum disordersSide effectsRecent placebo-controlled trialPediatric Tourette syndromePlacebo-controlled trialCurrent pharmacological treatmentsTreatment of ticsTotal tic scoreSeverity of ticsSubstantial side effectsTic Severity ScaleYears of ageMinimal side effectsPediatric TSPrimary outcomeSecondary outcomesGlutamatergic systemPharmacological treatment
2015
Meta-Analysis: Risk of Tics Associated With Psychostimulant Use in Randomized, Placebo-Controlled Trials
Cohen SC, Mulqueen JM, Ferracioli-Oda E, Stuckelman ZD, Coughlin CG, Leckman JF, Bloch MH. Meta-Analysis: Risk of Tics Associated With Psychostimulant Use in Randomized, Placebo-Controlled Trials. Journal Of The American Academy Of Child & Adolescent Psychiatry 2015, 54: 728-736. PMID: 26299294, DOI: 10.1016/j.jaac.2015.06.011.Peer-Reviewed Original ResearchConceptsWorsening of ticsRisk of ticsAttention-deficit/hyperactivity disorderPlacebo-controlled trialNew onsetDuration of treatmentPsychostimulant usePsychostimulant medicationNew-onset ticsType of psychostimulantsParallel-group trialStratified subgroup analysisSide effect dataTreatment of childrenAge of participantsPlacebo groupAdverse eventsCrossover studyPsychostimulant treatmentTic symptomsRisk ratioSubgroup analysisFamily historyGroup trialsPubMed search
2014
Cardiovascular Safety of Stimulants in Children with Attention-Deficit/Hyperactivity Disorder: A Nationwide Prospective Cohort Study
Dalsgaard S, Kvist AP, Leckman JF, Nielsen HS, Simonsen M. Cardiovascular Safety of Stimulants in Children with Attention-Deficit/Hyperactivity Disorder: A Nationwide Prospective Cohort Study. Journal Of Child And Adolescent Psychopharmacology 2014, 24: 302-310. PMID: 24956171, PMCID: PMC4137345, DOI: 10.1089/cap.2014.0020.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderProspective cohort studyCardiovascular eventsCohort studyDose-response relationshipStimulant treatmentCardiovascular safetyHazard ratioRisk factorsFirst nationwide cohort studyNationwide prospective cohort studyPossible dose-response relationshipUnique personal identification numberCardiovascular adverse eventsCardiovascular risk factorsHyperactivity disorderNationwide cohort studyNational health registersStimulant usersPopulation-based sampleAdverse eventsHealth registersProspective followCox regressionPotential confoundersGender and Injuries Predict Stimulant Medication Use
Dalsgaard S, Leckman JF, Nielsen HS, Simonsen M. Gender and Injuries Predict Stimulant Medication Use. Journal Of Child And Adolescent Psychopharmacology 2014, 24: 253-259. PMID: 24813570, PMCID: PMC4064734, DOI: 10.1089/cap.2013.0101.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAttention Deficit Disorder with HyperactivityCentral Nervous System StimulantsChildChild Development Disorders, PervasiveCraniocerebral TraumaFemaleFollow-Up StudiesHumansMaleMental DisordersPractice Patterns, Physicians'Prospective StudiesSeverity of Illness IndexSex FactorsWounds and InjuriesConceptsAttention-deficit/hyperactivity disorderStimulant treatmentNumber of injuriesADHD medicationPsychiatric disordersStimulant medicationAutism spectrum disorderFirst prospective studyGroup of patientsPopulation-based studyYears of ageEarly life predictorsStimulant medication useMedication useGroup of childrenProspective studyPharmacological treatmentHead injuryNational cohortDrug prescriptionsMale genderPsychiatric diagnosisMedicationsNational registersInjury
2011
The familial association of tourette's disorder and ADHD: The impact of OCD symptoms
O'Rourke JA, Scharf JM, Platko J, Stewart SE, Illmann C, Geller DA, King RA, Leckman JF, Pauls DL. The familial association of tourette's disorder and ADHD: The impact of OCD symptoms. American Journal Of Medical Genetics Part B Neuropsychiatric Genetics 2011, 156: 553-560. PMID: 21557467, PMCID: PMC3292860, DOI: 10.1002/ajmg.b.31195.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderComorbid Tourette's disorderObsessive-compulsive disorderTourette's disorderPresence of OCDCase-control studyDSM-IV attention-deficit/hyperactivity disorderOCD symptoms
2010
Neuropsychological Functioning in Children With Tourette Syndrome With and Without Attention-Deficit/Hyperactivity Disorder
Sukhodolsky DG, Landeros-Weisenberger A, Scahill L, Leckman JF, Schultz RT. Neuropsychological Functioning in Children With Tourette Syndrome With and Without Attention-Deficit/Hyperactivity Disorder. Journal Of The American Academy Of Child & Adolescent Psychiatry 2010, 49: 1155-1164.e1. PMID: 20970703, PMCID: PMC2965169, DOI: 10.1016/j.jaac.2010.08.008.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderConnors' Continuous Performance TestVisual-Motor Integration TestVisual-motor integrationContinuous Performance TestNeuropsychological functioningResponse inhibitionHyperactivity disorderCo-occurring attention-deficit/hyperactivity disorderStroop Color-Word Interference TestColor-Word Interference TestBeery Visual-Motor Integration TestAdequate control conditionsSample of childrenFine motor coordinationTourette syndromeNeuropsychological measuresPurdue Pegboard TestHealthy community control subjectsSubtle deficitsNeurobiological mechanismsNeuropsychological deficitsInterference testControl conditionPegboard TestSevere psychosocial stress and heavy cigarette smoking during pregnancy: an examination of the pre- and perinatal risk factors associated with ADHD and Tourette syndrome
Motlagh MG, Katsovich L, Thompson N, Lin H, Kim YS, Scahill L, Lombroso PJ, King RA, Peterson BS, Leckman JF. Severe psychosocial stress and heavy cigarette smoking during pregnancy: an examination of the pre- and perinatal risk factors associated with ADHD and Tourette syndrome. European Child & Adolescent Psychiatry 2010, 19: 755-764. PMID: 20532931, PMCID: PMC3932440, DOI: 10.1007/s00787-010-0115-7.Peer-Reviewed Original ResearchConceptsHeavy maternal smokingPerinatal risk factorsAttention-deficit/hyperactivity disorderSevere psychosocial stressRisk factorsMaternal smokingTourette syndromePsychosocial stressUnaffected control childrenControl childrenHeavy cigarette smokingHigh-risk populationStatistical significanceDiagnosis of ADHDComorbid Tourette's syndromeHigh rateMothers of childrenMaternal report dataHeavy smokingPerinatal historyCigarette smokingOdds ratioPsychiatric assessmentSmokingStandardized questionnaire
2009
Meta-Analysis: Treatment of Attention-Deficit/Hyperactivity Disorder in Children With Comorbid Tic Disorders
Bloch MH, Panza KE, Landeros-Weisenberger A, Leckman JF. Meta-Analysis: Treatment of Attention-Deficit/Hyperactivity Disorder in Children With Comorbid Tic Disorders. Journal Of The American Academy Of Child & Adolescent Psychiatry 2009, 48: 884-893. PMID: 19625978, PMCID: PMC3943246, DOI: 10.1097/chi.0b013e3181b26e9f.Peer-Reviewed Original ResearchMeSH KeywordsAdrenergic alpha-AgonistsAtomoxetine HydrochlorideAttention Deficit Disorder with HyperactivityChildComorbidityContraindicationsDose-Response Relationship, DrugDouble-Blind MethodHumansMethylphenidatePropylaminesPsychotropic DrugsRandomized Controlled Trials as TopicTic DisordersTourette SyndromeConceptsAlpha-2 agonistsAttention-deficit/hyperactivity disorderTic symptomsComorbid ticsSupratherapeutic dosesTic disordersADHD symptomsTreatment of ADHDHyperactivity disorderPlacebo-controlled trialEfficacy of medicationsStandardized mean differenceEvidence-based treatmentsHalf of childrenComorbid tic disordersPrimary outcomeDifferent medicationsPsychostimulant medicationPubMed searchTic severityTourette syndromePackage insertsDrug AdministrationAtomoxetineSymptoms
2008
Neuropsychiatric Disorders Associated With Streptococcal Infection: A Case-Control Study Among Privately Insured Children
Leslie DL, Kozma L, Martin A, Landeros A, Katsovich L, King RA, Leckman JF. Neuropsychiatric Disorders Associated With Streptococcal Infection: A Case-Control Study Among Privately Insured Children. Journal Of The American Academy Of Child & Adolescent Psychiatry 2008, 47: 1166-1172. PMID: 18724258, PMCID: PMC2783578, DOI: 10.1097/chi.0b013e3181825a3d.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAttention Deficit Disorder with HyperactivityCase-Control StudiesChildChild, PreschoolCross-Sectional StudiesDepressive Disorder, MajorFemaleHealth SurveysHumansIncidenceInsurance, HealthMaleMigraine DisordersNeurocognitive DisordersObsessive-Compulsive DisorderOdds RatioOtitis MediaRiskSinusitisStreptococcal InfectionsTic DisordersTourette SyndromeUnited StatesConceptsMajor depressive disorderAttention-deficit/hyperactivity disorderPrior streptococcal infectionStreptococcal infectionObsessive-compulsive disorderTic disordersTourette syndromeNeuropsychiatric disordersConditional logistic regression modelsStreptococcal sore throatDiagnosis of OCDCase-control studyLogistic regression modelsSore throatIncident diagnosisEpidemiologic evidenceDepressive disorderSubsequent diagnosisNoninfectious conditionsScarlet feverChildren ages 4Immune systemInfectious diseasesInfectionDiagnosis
2007
Tourette Syndrome and Tic Disorders: A Decade of Progress
SWAIN JE, SCAHILL L, LOMBROSO PJ, KING RA, LECKMAN JF. Tourette Syndrome and Tic Disorders: A Decade of Progress. Journal Of The American Academy Of Child & Adolescent Psychiatry 2007, 46: 947-968. PMID: 17667475, DOI: 10.1097/chi.0b013e318068fbcc.Peer-Reviewed Original ResearchCo-existence of tic disorders and attention-deficit/hyperactivity disorder-recent advances in understanding and treatment
Rothenberger A, Roessner V, Banaschewski T, Leckman JF. Co-existence of tic disorders and attention-deficit/hyperactivity disorder-recent advances in understanding and treatment. European Child & Adolescent Psychiatry 2007, 16: 1-4. PMID: 17665277, DOI: 10.1007/s00787-007-1001-9.Peer-Reviewed Original ResearchConceptsAttention-deficit/hyperactivity disorderTic disordersTreatment of youthHyperactivity disorderCognitive disturbancesFuture researchOwn clinical entityDaily clinical practiceEvidence-based approachClinical entityDisordersTreatment choiceClinical practiceDifferential diagnosticsEssential research topicEndophenotypesYouthDifferent levelsTreatmentUnderstandingBetter understandingResearch topic