2024
Problem Opioid Use Among US Military Veterans: Prevalence, Correlates, and Psychiatric Characteristics
Na P, Petrakis I, Krystal J, Pietrzak R. Problem Opioid Use Among US Military Veterans: Prevalence, Correlates, and Psychiatric Characteristics. Journal Of Addiction Medicine 2024, 18: 313-318. PMID: 38498625, PMCID: PMC11150085, DOI: 10.1097/adm.0000000000001286.Peer-Reviewed Original ResearchInstrumental activities of daily livingInstrumental activities of daily living disabilityLifetime suicide attemptsProblem opioid useUS military veteransUS veteransPsychiatric characteristicsSuicide attemptsMilitary veteransAssociated with black race/ethnicityActivities of daily livingNational Health and ResilienceLifetime alcohol use disorderMental health morbidityPosttraumatic stress disorderMental health disordersAlcohol use disorderNon-Hispanic race/ethnicityMultivariate logistic regression modelNationally representative sampleOpioid useLogistic regression modelsInstrumental activitiesHealth morbidityDaily living
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 levelsVeteransSuicidality
2021
Prevalence, 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
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