2024
Antipsychotic drugs in first-episode psychosis: a target trial emulation in the FEP-CAUSAL Collaboration
Szmulewicz A, Martínez-Alés G, Logan R, Ferrara M, Kelly C, Fredrikson D, Gago J, Conderino S, Díaz-Caneja C, Galvañ J, Thorpe L, Srihari V, Yatham L, Sarpal D, Shinn A, Arango C, Öngür D, Hernán M, Collaboration O. Antipsychotic drugs in first-episode psychosis: a target trial emulation in the FEP-CAUSAL Collaboration. American Journal Of Epidemiology 2024, 193: 1081-1087. PMID: 38576166, DOI: 10.1093/aje/kwae029.Peer-Reviewed Original ResearchFirst-episode psychosisFirst-generation agentsAntipsychotic therapyAntipsychotic drugsPsychosis onsetPsychotic disordersEpisode psychosisAripiprazolePaliperidoneRisk of hospitalizationPsychosisTarget trialsRisperidoneOlanzapineFirst-line therapyTreatment discontinuationEUFESTObservational cohortAntipsychoticsQuetiapineRandomized trialsPrimary outcomeAbsolute riskRisk differenceClinical questionsCorrection: On the proportion of patients who experience a prodrome prior to psychosis onset: a systematic review and meta-analysis
Benrimoh D, Dlugunovych V, Wright A, Phalen P, Funaro M, Ferrara M, Powers A, Woods S, Guloksuz S, Yung A, Srihari V, Shah J. Correction: On the proportion of patients who experience a prodrome prior to psychosis onset: a systematic review and meta-analysis. Molecular Psychiatry 2024, 29: 1567-1567. PMID: 38351175, DOI: 10.1038/s41380-024-02481-0.Peer-Reviewed Original ResearchOn the proportion of patients who experience a prodrome prior to psychosis onset: A systematic review and meta-analysis
Benrimoh D, Dlugunovych V, Wright A, Phalen P, Funaro M, Ferrara M, Powers A, Woods S, Guloksuz S, Yung A, Srihari V, Shah J. On the proportion of patients who experience a prodrome prior to psychosis onset: A systematic review and meta-analysis. Molecular Psychiatry 2024, 29: 1361-1381. PMID: 38302562, DOI: 10.1038/s41380-024-02415-w.Peer-Reviewed Original ResearchSources of heterogeneitySystematic reviewProportion of patientsMeta-analysisSubgroup analysisCochrane Database of Systematic ReviewsDatabase of Systematic ReviewsMeta-analysis of studies of patientsPsychosis onsetProspective cohort studyCochrane Central Register of Controlled TrialsCentral Register of Controlled TrialsRegister of Controlled TrialsAPA PsycInfoNarrative synthesisMeta-analysis estimatesCochrane Central RegisterPrevention of psychosisAscertainment methodsWeb of Science Core CollectionRecall biasQualitative studyAssess heterogeneityCohort studyOvid MEDLINE
2022
Granular analysis of pathways to care and durations of untreated psychosis: A marginal delay model
Mathis W, Ferrara M, Burke S, Hyun E, Li F, Zhou B, Cahill J, Kline E, Keshavan M, Srihari V. Granular analysis of pathways to care and durations of untreated psychosis: A marginal delay model. PLOS ONE 2022, 17: e0270234. PMID: 36472968, PMCID: PMC9725156, DOI: 10.1371/journal.pone.0270234.Peer-Reviewed Original ResearchUntreated psychosisAntipsychotic prescriptionsEarly detection campaignsPatient characteristics influencesEarly detection effortsPatient characteristicsClinical nodesLonger DUPFunctional declineOutpatient programPsychosis onsetSpecialized treatmentPsychosisNumber of daysDetection campaignsNetworks of careHigh functioningPrescriptionEnrollmentPTCDurationStart dateReducing Delay From Referral to Admission at a U.S. First-Episode Psychosis Service: A Quality Improvement Initiative
Ferrara M, Gallagher K, Yoviene Sykes LA, Markovich P, Li F, Pollard JM, Imetovski S, Cahill J, Guloksuz S, Srihari VH. Reducing Delay From Referral to Admission at a U.S. First-Episode Psychosis Service: A Quality Improvement Initiative. Psychiatric Services 2022, 73: 1416-1419. PMID: 35652190, PMCID: PMC9715806, DOI: 10.1176/appi.ps.202100374.Peer-Reviewed Original ResearchConceptsFirst-episode psychosis servicesConfirmation of eligibilityEarly detection campaignsProportion of admissionsSpecialty care servicesQuality improvement interventionsQuality improvement initiativesLonger DUPMedian delayPoor outcomeUntreated psychosisTreatment accessPsychosis onsetPsychosis servicesCSC servicesCare servicesImprovement interventionsAdmissionImprovement initiativesDetection campaignsInterventionGreater vulnerabilityReferralPsychosisTiming of cannabis exposure relative to prodrome and psychosis onset in a community-based first episode psychosis sample
Kline ER, Ferrara M, Li F, D'Souza DC, Keshavan M, Srihari VH. Timing of cannabis exposure relative to prodrome and psychosis onset in a community-based first episode psychosis sample. Journal Of Psychiatric Research 2022, 147: 248-253. PMID: 35066293, PMCID: PMC8882157, DOI: 10.1016/j.jpsychires.2022.01.039.Peer-Reviewed Original ResearchConceptsCannabis exposurePublic health significancePsychosis onsetPsychotic disordersHealth significanceFirst-episode psychosis samplePsychosis sampleFirst exposureFirst-episode psychosis servicesWorse premorbid functioningAdverse prognostic factorAssociation of ageImpact of cannabisPsychosis PreventionSymptom onsetPrognostic factorsOverall incidenceEarly psychosis sampleConsecutive admissionsOverall burdenPsychotic illnessPsychosis servicesPsychosis symptomsGreater severityYounger ageReducing the Duration of Untreated Psychosis (DUP) in a US Community: A Quasi-Experimental Trial
Srihari VH, Ferrara M, Li F, Kline E, Gülöksüz S, Pollard JM, Cahill JD, Mathis WS, Sykes L, Walsh BC, McDermott G, Seidman LJ, Gueorguieva R, Woods SW, Tek C, Keshavan MS. Reducing the Duration of Untreated Psychosis (DUP) in a US Community: A Quasi-Experimental Trial. Schizophrenia Bulletin Open 2022, 3: sgab057. PMID: 35295656, PMCID: PMC8919192, DOI: 10.1093/schizbullopen/sgab057.Peer-Reviewed Original ResearchUntreated psychosisUS communitiesEarly detection campaignsFirst-episode servicesEffectiveness of careNumber of referralsQuasi-experimental trialEarly detection effortsOutcome measuresPsychosis onsetSecond quartileRapid enrollmentThird quartileQuartilePrEPDUPDetection campaignsDetection effortsReferralPsychosisU.S. communitiesTrialsAMPFESDuration
2021
First help-seeking attempt before and after psychosis onset: measures of delay and aversive pathways to care
Ferrara M, Guloksuz S, Mathis WS, Li F, Lin IH, Syed S, Gallagher K, Shah J, Kline E, Tek C, Keshavan M, Srihari VH. First help-seeking attempt before and after psychosis onset: measures of delay and aversive pathways to care. Social Psychiatry And Psychiatric Epidemiology 2021, 56: 1359-1369. PMID: 33948678, PMCID: PMC8319102, DOI: 10.1007/s00127-021-02090-0.Peer-Reviewed Original ResearchConceptsPsychosis onsetNon-affective psychosisPsychosis risk syndromeEarly detection effortsAversive eventsAversive pathwaysProdromal sampleClinical characteristicsAntipsychotic treatmentEffective treatmentSociodemographic characteristicsSpecialized treatmentPsychosisProdromeOnsetTreatmentStructured interviewsOverall functioningFamily membersMeasures of delayEpisodesNew HavenSemi-structured interviewsHelp seekersPathway
2019
Predictive validity of conversion from the clinical high risk syndrome to frank psychosis
Yoviene Sykes LA, Ferrara M, Addington J, Bearden CE, Cadenhead KS, Cannon TD, Cornblatt BA, Perkins DO, Mathalon DH, Seidman LJ, Tsuang MT, Walker EF, McGlashan TH, Woodberry KA, Powers AR, Ponce AN, Cahill JD, Pollard JM, Srihari VH, Woods SW. Predictive validity of conversion from the clinical high risk syndrome to frank psychosis. Schizophrenia Research 2019, 216: 184-191. PMID: 31864837, PMCID: PMC7239715, DOI: 10.1016/j.schres.2019.12.002.Peer-Reviewed Original ResearchConceptsFrank psychosisFirst-episode psychosis patientsOne-yearNorth American Prodromal Longitudinal StudySeverity of illnessClinical high-risk syndromeCurrent antipsychotic medicationsHigh-risk syndromePsychosis risk syndromeClinical high riskPredictive validityFEP casesPrescription ratesAntipsychotic medicationPsychosis patientsRisk syndromePsychosis onsetHigh riskLittle investigative attentionDiagnostic stabilityCHR individualsPsychosis paradigmPsychosisLongitudinal studySyndrome
2018
Auditory and Visual Oddball Stimulus Processing Deficits in Schizophrenia and the Psychosis Risk Syndrome: Forecasting Psychosis Risk With P300
Hamilton HK, Woods SW, Roach BJ, Llerena K, McGlashan TH, Srihari VH, Ford JM, Mathalon DH. Auditory and Visual Oddball Stimulus Processing Deficits in Schizophrenia and the Psychosis Risk Syndrome: Forecasting Psychosis Risk With P300. Schizophrenia Bulletin 2018, 45: 1068-1080. PMID: 30753731, PMCID: PMC6737543, DOI: 10.1093/schbul/sby167.Peer-Reviewed Original ResearchConceptsPsychosis risk syndromeTarget P3bProcessing deficitsPsychosis onsetEvent-related potential componentP300 event-related potential componentTarget P3b amplitudesPsychosis riskInfrequent target stimuliVisual oddball taskPRS participantsHealthy control participantsP3b amplitudeVisual modalityTarget stimuliP3a amplitudeSchizophrenia participantsOddball taskNovel stimuliP300 amplitudeHC participantsRisk syndromeP3bVulnerability markerControl participantsThe duration of untreated psychosis: a phenomenological study
Kamens S, Davidson L, Hyun E, Jones N, Morawski J, Kurtz M, Pollard J, van Schalkwyk GI, Srihari V. The duration of untreated psychosis: a phenomenological study. Psychosis 2018, 10: 307-318. PMID: 31871485, PMCID: PMC6927331, DOI: 10.1080/17522439.2018.1524924.Peer-Reviewed Original ResearchUntreated psychosisYoung adultsEarly detection campaignsStandardized baseline assessmentRecent-onset psychosisPsychosocial risk factorsEarly intervention servicesMajority of participantsFunctional outcomeRisk factorsTreatment contactOnset psychosisPsychosis onsetEarly psychosisBaseline assessmentEarly interventionPsychosisEarly detectionIntervention servicesYoung adulthoodDetection campaignsYoung personPresent studyParticipantsAdults
2014
Reducing the duration of untreated psychosis and its impact in the U.S.: the STEP-ED study
Srihari VH, Tek C, Pollard J, Zimmet S, Keat J, Cahill JD, Kucukgoncu S, Walsh BC, Li F, Gueorguieva R, Levine N, Mesholam-Gately RI, Friedman-Yakoobian M, Seidman LJ, Keshavan MS, McGlashan TH, Woods SW. Reducing the duration of untreated psychosis and its impact in the U.S.: the STEP-ED study. BMC Psychiatry 2014, 14: 335. PMID: 25471062, PMCID: PMC4262386, DOI: 10.1186/s12888-014-0335-3.Peer-Reviewed Original ResearchConceptsEarly detectionEarly outcomesGeographic catchmentTIPS studyYounger patientsAppropriate patientsUntreated psychosisPsychosis onsetEffective treatmentCare providersPsychotic symptomsPublic education campaignsPsychotic disordersHelp-seeking behaviorSecondary aimComprehensive interventionPatientsIntervention servicesDUPEducation campaignsOutcomesSocial marketing approachPrimary aimTreatmentFES
2013
Automatic Auditory Processing Deficits in Schizophrenia and Clinical High-Risk Patients: Forecasting Psychosis Risk with Mismatch Negativity
Perez VB, Woods SW, Roach BJ, Ford JM, McGlashan TH, Srihari VH, Mathalon DH. Automatic Auditory Processing Deficits in Schizophrenia and Clinical High-Risk Patients: Forecasting Psychosis Risk with Mismatch Negativity. Biological Psychiatry 2013, 75: 459-469. PMID: 24050720, PMCID: PMC4028131, DOI: 10.1016/j.biopsych.2013.07.038.Peer-Reviewed Original ResearchConceptsCHR patientsHealthy control subjectsPsychosis onsetControl subjectsClinical high-risk patientsEarly illness schizophrenia patientsPsychosis riskClinical high-risk individualsHigh-risk patientsThird of patientsHigh-risk individualsCurrent clinical criteriaAuditory processing deficitsMismatch negativityNonclinical measuresAuditory devianceCox regressionClinical criteriaUnnecessary treatmentHigh riskCHR convertersPatientsPsychotic disordersSchizophrenia patientsPreventive interventionsDeficient Suppression of Default Mode Regions during Working Memory in Individuals with Early Psychosis and at Clinical High-Risk for Psychosis
Fryer SL, Woods SW, Kiehl KA, Calhoun VD, Pearlson GD, Roach BJ, Ford JM, Srihari VH, McGlashan TH, Mathalon DH. Deficient Suppression of Default Mode Regions during Working Memory in Individuals with Early Psychosis and at Clinical High-Risk for Psychosis. Frontiers In Psychiatry 2013, 4: 92. PMID: 24032017, PMCID: PMC3768116, DOI: 10.3389/fpsyt.2013.00092.Peer-Reviewed Original ResearchHealthy controlsDefault mode networkPsychosis onsetDMN regionsSeed-based connectivity analysisEarly schizophrenia patientsDMN suppressionClinical high riskLoad-dependent increaseMedial prefrontal cortexPosterior DMN nodesSuppression of activityPosterior parietal cortexResting-state fMRI dataDorsolateral prefrontal cortex activationDeficient suppressionESZ groupsESZ patientsPrefrontal cortex activationHigh riskEarly psychosisSchizophrenia patientsCHR individualsCortex activationLoad-dependent modulationChapter 10 Early auditory gamma-band responses in patients at clinical high risk for schizophrenia
Perez VB, Roach BJ, Woods SW, Srihari VH, McGlashan TH, Ford JM, Mathalon DH. Chapter 10 Early auditory gamma-band responses in patients at clinical high risk for schizophrenia. Supplements To Clinical Neurophysiology 2013, 62: 147-162. PMID: 24053038, PMCID: PMC4120874, DOI: 10.1016/b978-0-7020-5307-8.00010-7.Peer-Reviewed Original ResearchConceptsClinical high riskPhase-locking factorGamma-band responseAuditory gamma-band responsesCHR patientsHigh riskSchizophrenia patientsChronic schizophrenia patientsNMDA glutamate receptorsYounger schizophrenia patientsTransient gamma-band responseTrend-level reductionsNeurotransmission abnormalitiesGamma-band oscillationsYounger patientsIllness onsetProdromal symptomsPhase synchronyProdromal periodHealthy controlsPsychosis onsetPatientsPsychotic disordersCHR groupElectroencephalographic studies
2012
Error Monitoring Dysfunction Across the Illness Course of Schizophrenia
Perez VB, Ford JM, Roach BJ, Woods SW, McGlashan TH, Srihari VH, Loewy RL, Vinogradov S, Mathalon DH. Error Monitoring Dysfunction Across the Illness Course of Schizophrenia. Journal Of Psychopathology And Clinical Science 2012, 121: 372-387. PMID: 22060947, PMCID: PMC3358508, DOI: 10.1037/a0025487.Peer-Reviewed Original ResearchConceptsEarly illness schizophrenia patientsClinical high-risk patientsSchizophrenia patientsIllness courseAge-matched healthy controlsHigh-risk patientsAge-matched HCChronic schizophrenia patientsOnset of psychosisCorrect response negativityPE abnormalitiesRisk patientsCHR patientsClinical prodromeEvent-related potentialsIllness durationHealthy controlsIllness progressionPsychosis onsetPatientsAbnormalitiesIllnessResponse monitoringError-related negativityOnset