Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Lorig K. Kachadourian is active.

Publication


Featured researches published by Lorig K. Kachadourian.


Addiction | 2016

The burden of alcohol use disorders in U.S. Military veterans: results from the National Health and Resilience in Veterans Study

Brian S. Fuehrlein; Natalie Mota; Albert J. Arias; Louis Trevisan; Lorig K. Kachadourian; John H. Krystal; Steven M. Southwick; Robert H. Pietrzak

AIMS To analyze data from a large, contemporary, nationally representative sample of US veterans to evaluate: (1) the prevalence of life-time alcohol use disorder (AUD) and past-year AUD; (2) common psychiatric comorbidities associated with life-time AUD; and (3) correlates of life-time and past-year probable AUD. DESIGN Data were analyzed from the National Health and Resilience in Veterans Study (NHRVS), a web-based survey of a random probability sample of a contemporary, nationally representative sample of US military veterans. SETTING United States. PARTICIPANTS Nationally representative sample of 3157 US veterans aged 21 years and older. MEASUREMENTS Life-time alcohol abuse and dependence were assessed according to DSM-IV diagnostic criteria using the Mini International Neuropsychiatric Interview, and combined into a single variable: AUD. Past-year probable AUD was assessed using the Alcohol Use Disorders Identification Test-Consumption (AUDIT-C). Correlates of AUD, including psychiatric comorbidities, suicidality and demographic characteristics, were also assessed. FINDINGS The prevalence of life-time AUD and past-year probable AUD was 42.2% [95% confidence interval (CI) = 40.5-43.9%)] and 14.8% (95% CI = 13.6-16.0%), respectively. Compared with veterans without AUD, those with life-time AUD had substantially elevated rates of life-time and current mood and anxiety disorders [odds ratios (ORs) = 2.6-4.1], drug use disorder (OR = 10.7), life-time suicide attempt (OR = 4.1) and current suicidal ideation (OR = 2.1). Younger age, male sex, lower education, lower annual household income and greater number of life-time traumatic events were associated independently with life-time AUD. Younger age, male sex, unpartnered marital status and a life-time diagnosis of major depressive disorder were associated independently with past-year probable AUD. CONCLUSIONS More than 40% of US military veterans have a life-time history of alcohol use disorder. Veterans with a life-time history of alcohol use disorder have substantial comorbid psychiatric burden, including elevated rates of suicidal ideation and attempts. Certain socio-demographic (e.g. younger age, male sex, lower education) and clinical (e.g. trauma burden, history of depression) characteristics are associated with increased risk of AUD.


Psychiatry Research-neuroimaging | 2016

The burden of hostility in U.S. Veterans: Results from the National Health and Resilience in Veterans Study.

Lauren M. Sippel; Natalie Mota; Lorig K. Kachadourian; John H. Krystal; Steven M. Southwick; Ilan Harpaz-Rotem; Robert H. Pietrzak

Hostility is associated with substantial mental and physical health consequences. Population-based data regarding the nature and longitudinal course of hostility in U. S. veterans are scarce. We analyzed data from 2157 U. S. veterans who participated in the National Health and Resilience in Veterans Study, a nationally representative, prospective cohort study of U. S. veterans. We identified the prevalence of longitudinal courses of hostility (chronic, increasing, decreasing, or no hostility). We then evaluated relationships between sociodemographic, risk, and protective correlates measured at baseline and longitudinal courses of two aspects of hostility-aggressive urges and difficulties controlling anger. The majority of veterans (61.2%) reported experiencing difficulties controlling anger and a sizable minority of veterans (23.9%) reported experiencing aggressive urges over a two-year period. Protective psychosocial characteristics (e.g., optimism) and aspects of social connectedness (e.g., secure attachment style) were negatively associated with hostility. Psychological distress predicted all symptomatic hostility courses, while alcohol misuse predicted chronic aggressive urges and all symptomatic courses of difficulties controlling anger. These findings provide the first known population-based evaluation of the prevalence, course, and risk and protective correlates of hostility in U. S. veterans, and suggest targets for prevention and treatment efforts that can help mitigate risk for hostility in this population.


American Journal on Addictions | 2018

Suicidal ideation in military veterans with alcohol dependence and PTSD: The role of hostility: Suicidality in Those With Alcohol Dependence and PTSD

Lorig K. Kachadourian; Erin Gandelman; Elizabeth Ralevski; Ismene L. Petrakis

BACKGROUND AND OBJECTIVES Suicide is a significant public health problem among US military Veterans with rates exceeding civilian samples. Alcohol dependence (AD) and posttraumatic stress disorder (PTSD) are both associated with increases in suicidality. Given that risk of suicide is higher among those with both disorders, the study of relevant risk factors among those in this group is important. The current investigation focused on one such factor, hostility, and examined both overt hostility (ie, hostility that is more behavioral in nature and directed outwardly) and covert hostility (ie, hostility that is cognitive in nature and introspective) and their relationships to suicidal ideation. METHODS Ninety-three Veterans participating in a randomized, double-blind, placebo-controlled treatment study evaluating the efficacy of the alpha-adrenergic agonist prazosin completed measures assessing overt hostility, covert hostility, and suicidal ideation at baseline. Depression symptoms and PTSD symptom severity also were assessed. RESULTS Of the total sample, 60 participants (63.8%) indicated that they experienced suicidal ideation at some point in their lives. Covert hostility, in addition to PTSD symptom severity were found to be associated with the presence of lifetime suicidal ideation. Furthermore, depression symptoms were found to be associated with greater intensity of that ideation. CONCLUSION AND SCIENTIFIC SIGNIFICANCE Findings highlight the importance of covert hostility as it relates to suicidal ideation among those with comorbid PTSD and AD and provides information which may help inform treatment approaches for high-risk military Veterans. (Am J Addict 2018;27:124-130).


Personality and Social Psychology Bulletin | 2018

Etiological Pathways to Rejection Sensitivity in a High-Risk Sample

Stephanie A. Godleski; Rina D. Eiden; Lorig K. Kachadourian; Joseph F. Lucke

Rejection sensitivity is associated with social–emotional maladjustment in both childhood and adulthood. However, less is known about the etiology of rejection sensitivity. The present study tests an etiological model for rejection sensitivity using a high-risk sample (N = 227) with prospective data from infancy (i.e., 12 months) to adolescence (i.e., eighth grade). Evidence for social learning and attachment theories was demonstrated. In particular, family and parenting factors, such as family conflict and maternal harshness, were predictive of rejection sensitivity in adolescence. Implications for intervention and prevention efforts are discussed.


Journal of Dual Diagnosis | 2018

Negative Affect Intensity and Hostility in Individuals With Alcohol Use Disorder With or Without Posttraumatic Stress Disorder

Erin Gandelman; Ismene L. Petrakis; Lorig K. Kachadourian; Elizabeth Ralevski

ABSTRACT Objective: Negative affect intensity and hostility have both been implicated in alcohol use disorders (AUD) and posttraumatic stress disorder (PTSD) when they occur separately, but neither have been compared or explored among those with comorbid AUD and PTSD. This study is a secondary analysis designed to compare levels of negative affect intensity and hostility among those with AUD to those with comorbid AUD and PTSD. Methods: Participants (n = 113) were recruited from the placebo-controlled groups of two distinct 12-week clinical trials (NCT00342563 and NCT00744055). The Short Affect Intensity Scale and Buss-Durkee Hostility Inventory were administered at weeks 0, 4, 8, and 12 to all study participants to assess negative affect intensity and hostility levels, respectively. Results: Individuals with comorbid AUD and PTSD showed significantly higher levels of negative affect intensity and hostility than individuals with AUD only. These levels remained relatively stable over the course of the study in spite of all study participants showing clinically significant improvements in AUD severity and PTSD symptomatology (for those with dual diagnosis). Conclusions: Our results indicate that individuals with comorbid AUD and PTSD have higher levels of negative affect and higher levels of hostility compared to individuals with AUD alone. In addition, these heightened levels of negative affect intensity and hostility appear to function somewhat independently of diagnosis severity and symptomatology improvement. To our knowledge, this is the first study to compare negative affect intensity and hostility levels between individuals with AUD alone and those with comorbid AUD and PTSD.


American Journal on Addictions | 2018

Trajectories of alcohol consumption in U.S. military veterans: Results from the National Health and Resilience in Veterans Study: Alcohol Consumption Trajectories in Veterans

Brian S. Fuehrlein; Lorig K. Kachadourian; Elizabeth K. DeVylder; Louis Trevisan; Marc N. Potenza; John H. Krystal; Steven M. Southwick; Robert H. Pietrzak

BACKGROUND AND OBJECTIVES While alcohol use disorder is prevalent in U.S. veterans, little is known about the nature and determinants of predominant trajectories of alcohol consumption in this population. The objective of the current study was to identify predominant trajectories of alcohol consumption over a 4-year period, and baseline determinants of these trajectories in veterans. METHODS Data were analyzed from the National Health and Resilience in Veteran Study, which surveyed a nationally representative sample of 3,157 veterans (Wave 1). Assessments (Waves 2 and 3) were conducted every 2 years thereafter. Alcohol consumption was assessed using the Alcohol Use Disorders Identification Test-Consumption, a brief alcohol screen for identifying problematic drinking based on alcohol consumption. Wave 1 sociodemographic, military, health, and psychosocial variables were examined as possible determinants of trajectories of alcohol consumption. RESULTS Latent growth mixture modeling revealed that a four-class model best fit the data: rare drinkers (65.3%), moderate drinkers (30.2%), excessive drinkers (2.6%), and recovering drinkers (1.9%). Lifetime major depressive disorder (MDD) was linked to an excessive drinking trajectory, while fewer medical conditions and lower social support were linked to a moderate drinking trajectory. Having a secure attachment style and greater social support, and absence of lifetime MDD was linked to recovery from excessive drinking. CONCLUSIONS AND SCIENTIFIC SIGNIFICANCE Four predominant trajectories of alcohol consumption were identified. Targeting MDD and related interpersonal factors such as attachment style and social support in population-based prevention and treatment initiatives may help prevent, mitigate, and promote recovery from excessive alcohol consumption in veterans. (Am J Addict 2018;XX:1-8).


Archive | 2014

Alcohol Use Disorders and Comorbid Posttraumatic Stress Disorder in US Military Veterans: Etiology and Current Treatment Approaches Alcohol use disorders with comorbit PTSD

Lorig K. Kachadourian; Elissa McCarthy; Ismene L. Petrakis

Posttraumatic stress disorder (PTSD) is commonly observed in the US military, particularly among those exposed to combat. PTSD has been shown to be highly comorbid with substance use disorders (SUDs), particularly alcohol use disorders (AUDs). Research has been conducted to better understand not only why these disorders commonly co-occur but also how best to treat those who present with these dual diagnoses. The current chapter reviews the literature on the potential mechanisms that have been proposed to account for the high rates of comorbidity between PTSD and SUDs with a focus on AUDs and considers both psychological and biological perspectives. This chapter also examines psychotherapeutic approaches to treating these disorders, including those treatments developed specifically for those with comorbid PTSD and SUDs. In addition, pharmacological interventions are discussed, including those typically used to treat either PTSD or alcohol dependence (AD) alone. Recommendations for future directions are discussed throughout. List of Abbreviations AD Alcohol dependence AUD Alcohol use disorder COPE Concurrent treatment of PTSD and substance use disorders using prolonged exposure CPT Cognitive processing therapy CRH Corticotropin-releasing hormone CTPCD Concurrent treatment of PTSD and cocaine dependence DSM Diagnostic and Statistical Manual of Mental Disorders FDA Food and Drug Administration HPA Hypothalamic–pituitary–adrenal PE Prolonged exposure PTSD Posttraumatic stress disorder SUD Substance use disorder VETR Vietnam Era Twin Registry *Email: [email protected] *Email: [email protected] Comprehensive Guide to Post-Traumatic Stress Disorder DOI 10.1007/978-3-319-08613-2_108-1 # Springer International Publishing Switzerland 2015


Journal of Psychiatric Research | 2014

Trauma, PTSD, and binge and hazardous drinking among women and men: Findings from a national study

Lorig K. Kachadourian; Corey E. Pilver; Marc N. Potenza


Journal of Traumatic Stress | 2015

The Impact of Infidelity on Combat-Exposed Service Members

Lorig K. Kachadourian; Brian N. Smith; Casey T. Taft; Dawne Vogt


Addictive Behaviors | 2017

Relationship between substance use and attitudes towards seeking professional psychological help among veterans filing PTSD claims.

Sarah Meshberg-Cohen; Lorig K. Kachadourian; Anne C. Black; Marc I. Rosen

Collaboration


Dive into the Lorig K. Kachadourian's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Elissa McCarthy

United States Department of Veterans Affairs

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge