2024
Prevalence, Correlates, and Burden of Subthreshold PTSD in US Veterans.
Fischer I, Na P, Harpaz-Rotem I, Marx B, Pietrzak R. Prevalence, Correlates, and Burden of Subthreshold PTSD in US Veterans. The Journal Of Clinical Psychiatry 2024, 85 PMID: 39480145, DOI: 10.4088/jcp.24m15465.Peer-Reviewed Original ResearchConceptsSubthreshold posttraumatic stress disorderPosttraumatic stress disorderPosttraumatic stress disorder symptom clustersLifetime psychiatric disordersUS veteransUS military veteransSymptom-related distressStress disorderPsychiatric disordersSymptom clustersTreating veteransCriterion AMilitary veteransTraumatic eventsCognitive functionWorking case definitionMental healthCriterion FFunctional impairmentVeteransNationally representative sampleFunctional correlatesDisordersElevated oddsGreater oddsPsychological Factors, Physical Conditions, and Functioning Among US Veterans
Fischer I, Na P, Feldman D, Krist A, Kudler H, Jeste D, Pietrzak R. Psychological Factors, Physical Conditions, and Functioning Among US Veterans. JAMA Network Open 2024, 7: e2427382. PMID: 39120905, PMCID: PMC11316230, DOI: 10.1001/jamanetworkopen.2024.27382.Peer-Reviewed Original ResearchFunctional significance of posttraumatic growth in U.S. military veterans
Gower T, Fischer I, Tsai J, Kang H, Na P, Tedeschi R, Pietrzak R. Functional significance of posttraumatic growth in U.S. military veterans. Journal Of Affective Disorders 2024, 356: 267-273. PMID: 38614442, DOI: 10.1016/j.jad.2024.04.046.Peer-Reviewed Original ResearchConceptsPosttraumatic stress disorderPosttraumatic stress disorder symptomsPosttraumatic growthPsychosocial functioningTraumatic eventsTrauma-exposed U.S. veteransNational Health and ResilienceMale veteran samplePost-trauma functioningPattern of findingsRetrospective self-reportsU.S. military veteransVeteran sampleStress disorderVeterans StudyExamined relationsCross-sectional designMilitary veteransNationally representative sampleU.S. veteransAssociated with functionsPhysical functionClinical interventionsPsychosocial characteristicsVeteransProblematic Alcohol Use Trajectories in U.S. Military Veterans during a Public Health Crisis: Results from a 3-year, Nationally Representative, Longitudinal Study
Na P, Fischer I, Petrakis I, Pietrzak R. Problematic Alcohol Use Trajectories in U.S. Military Veterans during a Public Health Crisis: Results from a 3-year, Nationally Representative, Longitudinal Study. Psychiatric Quarterly 2024, 95: 157-171. PMID: 38319532, PMCID: PMC11521206, DOI: 10.1007/s11126-024-10067-w.Peer-Reviewed Original ResearchConceptsDrug use disordersProblematic alcohol useAlcohol use trajectoriesLow social supportAdverse childhood experiencesAlcohol useGreater household incomeSocial supportUS veteransLongitudinal studyNational Health and ResilienceLatent growth mixture modelingU.S. military veteransHousehold incomeGrowth mixture modelingNon-household membersCOVID-19 pandemicVeterans StudyUse disorderMilitary veteransChildhood experiencesPublic health crisisPsychosocial characteristicsPrevention effortsVeterans
2023
Functional Disability in US Military Veterans: The Importance of Integrated Whole Health Initiatives.
Meisler A, Gianoli M, Na P, Pietrzak R. Functional Disability in US Military Veterans: The Importance of Integrated Whole Health Initiatives. The Primary Care Companion For CNS Disorders 2023, 25 PMID: 37419488, DOI: 10.4088/pcc.22m03461.Peer-Reviewed Original ResearchConceptsPosttraumatic stress disorderIADL disabilityFunctional disabilityInstrumental ADLUS veteransCognitive disordersOlder ageDeployment-related injuryUS veteran populationUS military veteransLow incomeADL disabilityChronic painMale sexBlack raceClinical managementRisk factorsNational HealthSleep disordersDaily livingPsychiatric correlatesFunctional capacityVeteran populationDisability riskHealth initiativesFirearm Ownership Among a Nationally Representative Sample of U.S. Veterans
Fischer I, Aunon F, Nichter B, Hill M, Panza K, Kline A, Na P, Tsai J, Harpaz-Rotem I, Pietrzak R. Firearm Ownership Among a Nationally Representative Sample of U.S. Veterans. American Journal Of Preventive Medicine 2023, 65: 1129-1133. PMID: 37354925, DOI: 10.1016/j.amepre.2023.06.013.Peer-Reviewed Original ResearchConceptsU.S. veteransMultivariable logistic regression analysisLogistic regression analysisAlcohol use disorderSuicide prevention effortsU.S. military veteransNationally Representative SampleMale sexTrauma burdenNational HealthRepresentative sampleFirearm ownershipChi-square analysisUse disordersFirearm safetyIndependent sample t-testLifetime historyVeterans StudyPrevention effortsPsychiatric variablesMilitary veteransVeteransRegression analysisT-testSignificant main effectLongitudinal Trends in Suicidal Thoughts and Behaviors Among US Military Veterans During the COVID-19 Pandemic
Fischer I, Nichter B, Na P, Norman S, Krystal J, Pietrzak R. Longitudinal Trends in Suicidal Thoughts and Behaviors Among US Military Veterans During the COVID-19 Pandemic. JAMA Psychiatry 2023, 80: 577-584. PMID: 37017978, PMCID: PMC10077136, DOI: 10.1001/jamapsychiatry.2023.0393.Peer-Reviewed Original ResearchConceptsNew-onset suicidal ideationUS military veteransLifetime substance use disorderPast-year suicidal ideationSubstance use disordersSuicidal ideationSuicide planningMilitary veteransUse disordersPsychiatric distressCOVID-19 pandemicSuicidal thoughtsPopulation-based longitudinal studyEvidence-based preventionLongitudinal studyLongitudinal trendsCohort studyNational HealthUS veteransMAIN OUTCOMEVeterans StudySuicide attemptsSuicide riskVulnerable populationsVeterans
2022
Genetic liability to suicidal thoughts and behaviors and risk of suicide attempt in US military veterans: moderating effects of cumulative trauma burden
Nichter B, Koller D, De Angelis F, Wang J, Girgenti M, Na P, Hill M, Norman S, Krystal J, Gelernter J, Polimanti R, Pietrzak R. Genetic liability to suicidal thoughts and behaviors and risk of suicide attempt in US military veterans: moderating effects of cumulative trauma burden. Psychological Medicine 2022, 53: 6325-6333. PMID: 36444557, DOI: 10.1017/s0033291722003646.Peer-Reviewed Original ResearchConceptsPolygenic risk scoresUS military veteransLifetime suicide attemptsSuicide attemptsTrauma exposureTrauma burdenGenetic liabilityMilitary veteransDrug repurposing analysisPopulation-based sampleCumulative trauma exposureLifetime trauma exposureLow trauma exposureSuicide prediction modelsChronic inflammationInflammatory processNervous system developmentRisk scorePsychiatric characteristicsSuicidal behaviorExposure interactionsLarge genome-wide association studiesHigh levelsVeteransSuicidalityMoral injury among U.S. combat veterans with and without PTSD and depression
Norman SB, Nichter B, Maguen S, Na PJ, Schnurr PP, Pietrzak RH. Moral injury among U.S. combat veterans with and without PTSD and depression. Journal Of Psychiatric Research 2022, 154: 190-197. PMID: 35947898, DOI: 10.1016/j.jpsychires.2022.07.033.Peer-Reviewed Original ResearchConceptsProbable posttraumatic stress disorderPosttraumatic stress disorderCombat veteransInjurious eventsU.S. combat veteransProbable depressionFunctional impairmentMost veteransStress disorderDepressionVeteransPrevalenceDisordersRepresentative studyRepresentative sampleMoral injuryPMIEsParticipantsCo-occurring alcohol use disorder and obesity in U.S. military veterans: Prevalence, risk factors, and clinical features
Carr MM, Serowik KL, Na PJ, Potenza MN, Martino S, Masheb RM, Pietrzak RH. Co-occurring alcohol use disorder and obesity in U.S. military veterans: Prevalence, risk factors, and clinical features. Journal Of Psychiatric Research 2022, 150: 64-70. PMID: 35358833, DOI: 10.1016/j.jpsychires.2022.03.039.Peer-Reviewed Original ResearchConceptsAlcohol use disorderCo-occurring alcohol use disorderCo-occurring obesityU.S. military veteransRisk factorsUse disordersProbable alcohol use disorderAlcohol Use Disorders Identification TestMore adverse childhood experiencesBody mass indexMilitary veteransSelf-reported heightDisorders Identification TestAdverse childhood experiencesClinical featuresClinical presentationMass indexNeeds of veteransClinical correlatesClinical conditionsMultinomial logistic regressionObesityChildhood adversityLogistic regressionEffective interventionsMilitary sexual trauma in the United States: Results from a population-based study
Nichter B, Holliday R, Monteith LL, Na PJ, Hill ML, Kline AC, Norman SB, Pietrzak RH. Military sexual trauma in the United States: Results from a population-based study. Journal Of Affective Disorders 2022, 306: 19-27. PMID: 35301038, DOI: 10.1016/j.jad.2022.03.016.Peer-Reviewed Original ResearchConceptsMilitary sexual traumaCurrent posttraumatic stress disorderPopulation-based studyPosttraumatic stress disorderMST historyMale veteransGreater oddsFemale veteransHealth burdenPsychosocial functioningSexual traumaGeneral veteran populationPopulation-based surveyPrevalence of MSTMental health treatmentSex-stratified associationsCross-sectional designPsychiatric comorbidityNational HealthTreatment utilizationVeteran populationHealth treatmentSuicidal intentVeterans StudySomatic symptoms
2021
Epidemiology of DSM-5 alcohol use disorder in U.S. military veterans: Results from the National Health and Resilience in Veterans Study
Panza KE, Kline AC, Na PJ, Potenza MN, Norman SB, Pietrzak RH. Epidemiology of DSM-5 alcohol use disorder in U.S. military veterans: Results from the National Health and Resilience in Veterans Study. Drug And Alcohol Dependence 2021, 231: 109240. PMID: 34974271, DOI: 10.1016/j.drugalcdep.2021.109240.Peer-Reviewed Original ResearchConceptsDSM-5 alcohol use disorderAlcohol use disorderPast-year alcohol use disorderLifetime alcohol use disorderAdverse childhood experiencesNational HealthUse disordersU.S. veteransVeterans StudySuicidal behaviorPrevalent public health concernPopulation-based burdenPrevalence of lifetimeSevere alcohol use disorderPublic health concernChildhood experiencesU.S. military veteransLifetime prevalenceLifetime PTSDPsychiatric characteristicsPsychiatric disordersDiagnostic criteriaElevated oddsVeteran populationPreventive effortsPrevalence and Trends in Suicidal Behavior Among US Military Veterans During the COVID-19 Pandemic
Nichter B, Hill ML, Na PJ, Kline AC, Norman SB, Krystal JH, Southwick SM, Pietrzak RH. Prevalence and Trends in Suicidal Behavior Among US Military Veterans During the COVID-19 Pandemic. JAMA Psychiatry 2021, 78: 1218-1227. PMID: 34431973, PMCID: PMC8387942, DOI: 10.1001/jamapsychiatry.2021.2332.Peer-Reviewed Original ResearchConceptsUS military veteransCOVID-19 infectionCohort studySuicidal behaviorPast-year suicide ideationRisk factorsMilitary veteransPopulation-based prospective cohort studyCOVID-19 pandemicSuicide ideationSuicide attemptsProspective cohort studyLifetime posttraumatic stress disorderStrong risk factorCOVID-19 public health emergencyLow social supportPosttraumatic stress disorderPublic health emergencyAlcohol use disorder severityUS veteransNational HealthMAIN OUTCOMESuicide attempt historyVeterans StudyCOVID-19-related variablesPrevalence, risk and protective factors of alcohol use disorder during the COVID-19 pandemic in U.S. military veterans
Na PJ, Norman SB, Nichter B, Hill ML, Rosen MI, Petrakis IL, Pietrzak RH. Prevalence, risk and protective factors of alcohol use disorder during the COVID-19 pandemic in U.S. military veterans. Drug And Alcohol Dependence 2021, 225: 108818. PMID: 34171825, PMCID: PMC9758576, DOI: 10.1016/j.drugalcdep.2021.108818.Peer-Reviewed Original ResearchConceptsProbable alcohol use disorderAlcohol use disorderUse disordersU.S. military veteransHigh riskYounger ageProtective factorsLifetime substance use disorderUse severityMilitary veteransChronic alcohol use disorderIncident alcohol use disordersSubstance use disordersLow dispositional optimismCOVID-19 pandemicCOVID-related worryAlcohol use severityDrug use severityProspective cohortUS veteransHigh-risk sampleNational HealthGeneral populationLower riskAlcohol consumptionPosttraumatic Distress Symptoms and Their Response to Treatment in Adults With Prolonged Grief Disorder.
Na PJ, Adhikari S, Szuhany KL, Chen AZ, Suzuki RR, Malgaroli M, Robinaugh DJ, Bui E, Mauro C, Skritskaya NA, Lebowitz BD, Zisook S, Reynolds CF, Shear MK, Simon NM. Posttraumatic Distress Symptoms and Their Response to Treatment in Adults With Prolonged Grief Disorder. The Journal Of Clinical Psychiatry 2021, 82 PMID: 34000119, DOI: 10.4088/jcp.20m13576.Peer-Reviewed Original ResearchConceptsPosttraumatic stress symptomsPosttraumatic distress symptomsNonviolent deathsGrief disorderPosttraumatic stress disorderBereaved adultsPrimary diagnosisFunctional impairmentMixed-effects regressionPlaceboProlonged Grief DisorderGrief treatmentMajor life stressorsCitalopramSecondary analysisAntidepressant citalopramDistress symptomsStress disorderPoor functioningLife stressorsAdultsDisordersTreatmentStress symptomsSymptomsPrevalence, risk and protective factors associated with suicidal ideation during the COVID-19 pandemic in U.S. military veterans with pre-existing psychiatric conditions
Na PJ, Tsai J, Hill ML, Nichter B, Norman SB, Southwick SM, Pietrzak RH. Prevalence, risk and protective factors associated with suicidal ideation during the COVID-19 pandemic in U.S. military veterans with pre-existing psychiatric conditions. Journal Of Psychiatric Research 2021, 137: 351-359. PMID: 33756377, PMCID: PMC8545743, DOI: 10.1016/j.jpsychires.2021.03.021.Peer-Reviewed Original ResearchConceptsPre-existing psychiatric conditionsPsychiatric symptom severitySuicidal ideationPsychiatric conditionsPsychiatric symptomsSymptom severityCOVID-19Protective factorsCoronavirus disease 2019 (COVID-19) pandemicPast-year suicidal ideationCOVID-19 infectionDisease 2019 pandemicLifetime suicide attemptsU.S. military veteransMultivariable analysisNational HealthOlder veteransGeneral populationRepresentative cohortU.S. veteransVeterans StudySuicide attemptsOlder ageSuicide riskPsychosocial difficulties
2018
The PHQ-9 Item 9 based screening for suicide risk: a validation study of the Patient Health Questionnaire (PHQ)−9 Item 9 with the Columbia Suicide Severity Rating Scale (C-SSRS)
Na PJ, Yaramala SR, Kim JA, Kim H, Goes FS, Zandi PP, Voort J, Sutor B, Croarkin P, Bobo WV. The PHQ-9 Item 9 based screening for suicide risk: a validation study of the Patient Health Questionnaire (PHQ)−9 Item 9 with the Columbia Suicide Severity Rating Scale (C-SSRS). Journal Of Affective Disorders 2018, 232: 34-40. PMID: 29477096, DOI: 10.1016/j.jad.2018.02.045.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedCohort StudiesCross-Sectional StudiesDepressionFemaleHumansMaleMiddle AgedNeuropsychological TestsPregnancyReference StandardsRegistriesReproducibility of ResultsRisk AssessmentSensitivity and SpecificitySocioeconomic FactorsSuicidal IdeationSuicideSurveys and QuestionnairesYoung AdultConceptsPatient Health QuestionnaireColumbia-Suicide Severity Rating ScaleSeverity Rating ScaleSuicide riskItem 9Health QuestionnaireRating ScaleGold standardOverall poor resultsSuicide ideationClinical characteristicsOverall cohortCare registriesPHQ-9Depressed patientsClinical subgroupsSuicide itemPatientsPassive thoughtsSurrogate measureRiskPoor resultsFurther investigationIdeationAssessment tool
2017
The relative influence of individual risk factors for attempted suicide in patients with bipolar I versus bipolar II disorder
Bobo WV, Na PJ, Geske JR, McElroy SL, Frye MA, Biernacka JM. The relative influence of individual risk factors for attempted suicide in patients with bipolar I versus bipolar II disorder. Journal Of Affective Disorders 2017, 225: 489-494. PMID: 28865370, DOI: 10.1016/j.jad.2017.08.076.Peer-Reviewed Original ResearchConceptsBody mass indexLifetime suicide attemptsRisk factorsBD-IISuicide attemptsAcute psychiatric problemsSubstance use comorbiditiesStrong risk factorCross-sectional cohortPrevalence of lifetimeBD II patientsMayo Clinic Bipolar Disorder BiobankIndividual risk factorsRapid cyclingRisk of lifetimeEntire cohortIllness onsetMass indexClinical variablesFemale sexIllness coursePsychiatric hospitalizationSuicidal patientsPsychiatric problemsStandardized questionnaire
2016
Predictors of suicidal ideation in Korean American older adults: analysis of the Memory and Aging Study of Koreans (MASK)
Na PJ, Kim KB, Lee‐Tauler S, Han H, Kim MT, Lee HB. Predictors of suicidal ideation in Korean American older adults: analysis of the Memory and Aging Study of Koreans (MASK). International Journal Of Geriatric Psychiatry 2016, 32: 1272-1279. PMID: 27779333, PMCID: PMC5993045, DOI: 10.1002/gps.4608.Peer-Reviewed Original ResearchConceptsKorean American older adultsSelf-rated mental healthMinor depressive syndromeDepressive syndromeAmerican older adultsSuicidal ideationOlder adultsMental healthHealth statusPoor self-rated mental healthMajor depressive syndromePatient Health QuestionnairePhysical health statusMental health statusSuicide prevention interventionsCommunity-representative sampleHealth QuestionnaireEpidemiologic studiesPrevention interventionsSelf-rated mental health statusBaltimore-Washington areaSyndromeSuicide riskEarly detectionAging Study