Hadar Hazan, PhD
Postdoctoral AssociateAbout
Titles
Postdoctoral Associate
Biography
Postdoctoral fellow in the psychiatry department
Departments & Organizations
Education & Training
- PhD
- Otago University, Psychology (2019)
- MA
- Haifa University, Community mental health (2013)
- BA
- Open University, Psychology (2010)
Research
Publications
2025
The impact of Duration of Untreated Psychosis on functioning and quality of life over one year of Coordinated Specialty Care (CSC)
Hazan H, Tayfur S, Zhou B, Li F, Gibbs-Dean T, Karmani S, Kline E, Ferrara M, Corbera S, Riley S, Sykes L, Tek C, Keshavan M, Srihari V. The impact of Duration of Untreated Psychosis on functioning and quality of life over one year of Coordinated Specialty Care (CSC). PLOS ONE 2025, 20: e0312740. PMID: 39928579, PMCID: PMC11809850, DOI: 10.1371/journal.pone.0312740.Peer-Reviewed Original ResearchConceptsCoordinated specialty careQuality of lifeDuration of untreated psychosisDUP groupWorld Health OrganizationYear of coordinated specialty careGeneralized linear modelConfidence intervalsBinary outcomesGlobal functioningDuration of untreated psychosis groupSymptom severityUntreated psychosisSpecialty careCSC programsImpact of duration of untreated psychosisFunctional gainsModel repeated measuresMixed model repeated measuresOdds ratioNo significant differenceLogit link functionStatus improvementContinuous outcomesSocial functioningMeasurement properties of instruments to assess insight in psychosis: A systematic review protocol
Hazan H, Funaro M, Srihari V. Measurement properties of instruments to assess insight in psychosis: A systematic review protocol. PLOS ONE 2025, 20: e0316447. PMID: 39854417, PMCID: PMC11759350, DOI: 10.1371/journal.pone.0316447.Peer-Reviewed Original ResearchConceptsMeasurement properties of instrumentsProperties of instrumentsSystematic reviewCOSMIN Risk of Bias checklistRisk of Bias checklistMeasurement propertiesMeasure methodological qualityMeta-Analysis ProtocolsSynthesize current evidenceSystematic review protocolPreferred Reporting ItemsClinical practicePeer-reviewed journalsStrength of evidenceSemi-structured interviewsBias checklistImprove careMental illnessMethodological qualityReporting ItemsPatient awarenessPRISMA-PReview protocolGRADE approachSelf-reportInsight and suicidality in first-episode psychosis: The mediating role of depression
Tayfur S, Song Z, Li F, Hazan H, Gibbs-Dean T, Purushothaman D, Karmani S, Terashima J, Tek C, Srihari V. Insight and suicidality in first-episode psychosis: The mediating role of depression. Schizophrenia Research 2025, 275: 189-195. PMID: 39754935, DOI: 10.1016/j.schres.2024.12.013.Peer-Reviewed Original ResearchConceptsFirst-episode psychosisPredictors of suicideCoordinated specialty careTreatment of depressionPersistence of depressionEffects of depressionSuicide attemptsMediation analysisPrevent suicideDepressionSuicideImpact suicidePsychosisTargeted interventionsLongitudinal cohort studyEarly treatment stageParticipantsSignificant predictorsImproving clinical outcomesRegression analysisSpecialty careClinical outcomesCohort studyRelationshipMonths
2024
The anomalous effect of COVID-19 pandemic restrictions on the duration of untreated psychosis
Nicholls-Mindlin J, Hazan H, Zhou B, Li F, Ferrara M, Levine N, Riley S, Karmani S, Mathis W, Keshavan M, Srihari V. The anomalous effect of COVID-19 pandemic restrictions on the duration of untreated psychosis. BJPsych Open 2024, 10: e216. PMID: 39628123, PMCID: PMC11698182, DOI: 10.1192/bjo.2024.813.Peer-Reviewed Original ResearchPersonal and collective future thought in times of uncertainty
Hazan H, Hui V, Chan C. Personal and collective future thought in times of uncertainty. Futures 2024, 160: 103380. DOI: 10.1016/j.futures.2024.103380.Peer-Reviewed Original ResearchThe impact of early detection (ED) campaigns on care presentations: Beyond DUP reduction
Hazan H, Ferrara M, Riley S, Li F, Zhou B, Kline E, Gibbs-Dean T, Karmani S, Tayfur S, Tek C, Keshavan M, Srihari V. The impact of early detection (ED) campaigns on care presentations: Beyond DUP reduction. Schizophrenia Research 2024, 264: 457-461. PMID: 38266513, PMCID: PMC10923115, DOI: 10.1016/j.schres.2024.01.022.Peer-Reviewed Original ResearchConceptsCoordinated specialty careDuration of untreated psychosisImpact of early detectionEarly detectionEarly detection campaignsSpecialty careAdjustment scoresCampaign yearDetection campaignsMediation analysisEffects of EDRegression modelsCareUntreated psychosisPositive symptomsGAFPatientsSalutary effectsRole of Early Psychosis Detection in the Relationship Between Personal Income and Duration of Untreated Psychosis
Venkataraman S, Hazan H, Li F, Ferrara M, Harper A, Ma J, Shah J, Musket C, Levine N, Keshavan M, Srihari V. Role of Early Psychosis Detection in the Relationship Between Personal Income and Duration of Untreated Psychosis. Psychiatric Services 2024, 75: 427-433. PMID: 38204369, DOI: 10.1176/appi.ps.20230239.Peer-Reviewed Original ResearchDuration of untreated psychosisFirst-episode psychosis servicesFirst-episode psychosisEarly psychosis detectionLow personal incomeSocioeconomic statusUntreated psychosisOutcome of first-episode psychosisLength of duration of untreated psychosisEffectiveness of early detectionSpecialty care clinicsProlonged duration of untreated psychosisReduce duration of untreated psychosisEffects of ageLow socioeconomic statusPersonal incomeIndicators of disparitiesEarly detection effortsAssociated with younger ageYears of educationSES indicatorsCare clinicsEarly detectionBlack raceHierarchical regression
2023
The effect of duration of untreated psychosis (DUP) on the risk for hospitalization after admission to a first episode service
Ferrara M, Guloksuz S, Hazan H, Li F, Tek C, Sykes L, Riley S, Keshavan M, Srihari V. The effect of duration of untreated psychosis (DUP) on the risk for hospitalization after admission to a first episode service. Schizophrenia Research 2023, 260: 198-204. PMID: 37688984, DOI: 10.1016/j.schres.2023.08.005.Peer-Reviewed Original ResearchConceptsFirst-episode psychosis servicesLength of stayUntreated psychosisPsychiatric hospitalizationFirst-episode servicesDuration of hospitalizationIncidence rate ratiosNon-affective psychosisNew Haven areaPoisson regression modelsPatient characteristicsHospitalization ratesRecent onsetMedical recordsHospitalizationEffect of durationNegative binomial regressionSpecialized treatmentPsychosisRate ratioBinomial regressionAdmissionDUPEnrollmentFirst year
2022
The Health Hexagon Model: Postulating a holistic lifestyle approach to mental health for times and places of uncertainty
Chan C, Hazan H. The Health Hexagon Model: Postulating a holistic lifestyle approach to mental health for times and places of uncertainty. SSM - Mental Health 2022, 2: 100071. DOI: 10.1016/j.ssmmh.2022.100071.Peer-Reviewed Original ResearchIndirect contact with nature, lifestyle, and mental health outcomes during mandatory hotel quarantine in Hong Kong
Hazan H, Chan C. Indirect contact with nature, lifestyle, and mental health outcomes during mandatory hotel quarantine in Hong Kong. Journal Of Mental Health 2022, 32: 835-841. PMID: 36382637, DOI: 10.1080/09638237.2022.2140786.Peer-Reviewed Original ResearchConceptsMental health outcomesHealth outcomesHotel quarantineMental health outcome measuresWorse mental health outcomesIndirect contactWeeks of quarantineHealth outcome measuresPossible protective factorDays of quarantineLifestyle factorsOutcome measuresDepressive symptomsWeek 2Protective factorsPeriod of quarantineOutcomesWorse qualityPerceived stressDurationQuarantineOnline questionnaireLow senseHong KongSymptoms
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