2023
The Functional Significance of a Novel Conceptualization of Intrusion Symptoms of PTSD
Spiller T, Gross G, Duek O, Pietrzak R, Harpaz-Rotem I. The Functional Significance of a Novel Conceptualization of Intrusion Symptoms of PTSD. European Psychiatry 2023, 66: s476-s477. PMCID: PMC10434546, DOI: 10.1192/j.eurpsy.2023.1020.Peer-Reviewed Original ResearchPosttraumatic stress disorderIntrusion symptomsResidential treatment programEmotional functioningFactors of PTSDSymptoms of PTSDSymptom clustersDistinct underlying processesDisclosure of interestSelf-report formCore defining featuresStructural equation modellingPhysical functioningGood model fitStress disorderPTSD ChecklistIntrusion factorCorresponding subscalesPreliminary empirical evidenceInitial supportDSM-5Equation modellingTreatment programSuperior fitBiological underpinningsClinical significance of novel 8-factor model of DSM-5 PTSD in national VA PTSD residential treatment data: Internally- v. externally-cued intrusions
Gross G, Spiller T, Duek O, Pietrzak R, Harpaz-Rotem I. Clinical significance of novel 8-factor model of DSM-5 PTSD in national VA PTSD residential treatment data: Internally- v. externally-cued intrusions. Journal Of Affective Disorders 2023, 328: 255-260. PMID: 36806596, DOI: 10.1016/j.jad.2023.02.046.Peer-Reviewed Original ResearchConceptsPosttraumatic stress disorderPTSD symptomsDysphoric arousalDSM-5 posttraumatic stress disorderDSM-5 PTSD symptomsDistinct underlying processesSelf-report measuresGeneralized anxiety symptomsSuperior model fitPhysical health functioningCore defining featuresStructural equation modelingWorse emotional functioningAnxious arousalSymptoms of depressionNegative affectIntrusion symptomsGreater avoidanceEmotional functioningStress disorderAnxiety symptomsPTSD ChecklistIntrusion factorCross-sectional designGeneralized anxiety
2022
Comparative effectiveness of group v. individual trauma-focused treatment for posttraumatic stress disorder in veterans
Spiller TR, Duek O, Buta E, Gross G, Smith NB, Harpaz-Rotem I. Comparative effectiveness of group v. individual trauma-focused treatment for posttraumatic stress disorder in veterans. Psychological Medicine 2022, 53: 4561-4568. PMID: 35959560, PMCID: PMC10388318, DOI: 10.1017/s0033291722001441.Peer-Reviewed Original ResearchConceptsGroup cognitive processing therapyCognitive processing therapyPosttraumatic stress disorderIndividual cognitive processing therapyPTSD symptom severitySymptom severityStress disorderReal-world effectivenessComparative effectiveness studiesResidential treatmentEffective treatmentComparative effectivenessVeterans AffairsEffectiveness studiesPTSD ChecklistPTSD severityGroup therapySeverityVeteransTreatmentDSM-5Group V.TherapyDisordersSmall reduction
2011
Support for a novel five-factor model of posttraumatic stress symptoms in three independent samples of Iraq/Afghanistan veterans: A confirmatory factor analytic study
Pietrzak RH, Tsai J, Harpaz-Rotem I, Whealin JM, Southwick SM. Support for a novel five-factor model of posttraumatic stress symptoms in three independent samples of Iraq/Afghanistan veterans: A confirmatory factor analytic study. Journal Of Psychiatric Research 2011, 46: 317-322. PMID: 22154134, DOI: 10.1016/j.jpsychires.2011.11.013.Peer-Reviewed Original ResearchConceptsIraq/Afghanistan veteransHyperarousal symptom clustersConfirmatory factor analytic studyFactor analytic studiesAfghanistan veteransDysphoric arousalPTSD symptomsArousal clustersCommunity samplePosttraumatic stress disorder (PTSD) symptomsEmotional numbing modelSymptom clustersTreatment-seeking samplePosttraumatic stress symptomsDSM-IV modelIndependent samplesFive-factor modelConfirmatory factor analysisAnxious arousalEmotional numbingNumbing modelPTSD symptomatologyDisorder symptomsStress symptomsPTSD Checklist