Publications

The following manuscripts have been published or are currently in press. Listings are in chronological order, unless otherwise noted.

Research Publication 2
Title Publication Date/Location
Longitudinal Trajectories of Comorbid PTSD and Depression Symptoms Among U.S. Service Members and Veterans BMC Psychiatry 2019 Dec 13;19(1):396

Armenta RF, Walter KH, Geronimo-Hara TR, Porter B, Stander V, LeardMann CA, for the Millennium Cohort Study Team

This study examined the patterns of PTSD and depression symptoms over time among those with probable comorbid PTSD and depression at baseline. We found that PTSD and depression symptoms tended to move in tandem. Although many service members and veterans experienced a reduction of symptoms over time, one quarter of individuals reported high levels of PTSD and depression symptoms during the almost 12 years of follow-up. Notable factors associated with elevated comorbid PTSD/depression symptoms included older age, combat experiences, and having other co-occurring health problems. Results highlight the need for comprehensive assessment and treatment of comorbid PTSD/depression.

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Posttraumatic Stress Disorder and Risk of Selected Autoimmune Diseases among US Military Personnel BMC Psychiatry 2020 Jan 15; 20 (1):23

Bookwalter DB, Roenfeldt KA, LeardMann CA, Kong SY, Riddle MS,Rull RP

This study investigated the association between PTSD and risk of developing selected autoimmune diseases among US active duty service members. Among 120,572 participants followed for an average of 5 years, risk of any of the selected new-onset autoimmune diseases was 58% higher for those with a history of PTSD compared to those with no history. Observed associations did not differ by specific types of trauma experienced. Future research is needed to understand the physiological pathways that may link PTSD with increased risk of immune-mediated inflammatory diseases.

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The Physical and Mental Health of a Large Military Cohort: Baseline Functional Health Status of the Millennium Cohort BMC Public Health 2007 Nov;7(147):340

Smith TC, Zamorski M, Smith B, Riddle JR, LeardMann CA, Wells TS, Engel CC, Hoge CW, Adkins J, Blazer D, for the Millennium Cohort Study Team

The functional health of service members in this 22-year longitudinal study compares favorably at baseline with other civilian and military populations.

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Health Impact of US Military Service in a Large Population-Based Military Cohort: Findings of the Millennium Cohort Study, 2001-2008 BMC Public Health 2011 Jan;11(1):69

Smith TC, Jacobson IG, Hooper TI, LeardMann CA, Boyko EJ, Smith B, Gackstetter GD, Wells TS, Amoroso PJ, Gray GC, Riddle JR, Ryan MAK, for the Millennium Cohort Study Team

This report summarizes findings from the Millennium Cohort Study through 2008 that have addressed health concerns related to military service. Conducting strategic studies aimed to identify, reduce, and prevent adverse health outcomes in military members have guided public health policy and will continue to affect policy for years to come.

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Magnitude of Problematic Anger and its Predictors in the Millennium Cohort BMC Public Health 2020;20(1):1168

Adler AB, LeardMann CA, Roenfeldt KA, Jacobson IG, Forbes D

Among sample of service members and Veterans (N= 90,266), 17% screened positive for problematic anger. Numerous independent factors were associated with an increased risk of problematic anger (e.g., PTSD, depression, financial problems, problem drinking) and decreased risk of problem anger (e.g., positive perspective, self-mastery). Developing interventions that target problematic anger in the military is critical given its high prevalence, distinction from other mental disorders, role in impeding effective PTSD treatment, and impact on vocational and interpersonal functioning.

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Military service experiences and reasons for service separation among lesbian, gay, and bisexual individuals in a large military cohort BMC Public Health 2022 Jan 6;22(1):39

Carey FR, Jacobson IG, Lehavot K, LeardMann CA, Kolaja CA, Stander VA, Rull RP

The goal of this study was to examine differences in military and service separation experiences by sexual orientation among a large representative sample of United States service members and veterans. Survey data from the 2016 Millennium Cohort Study follow-up questionnaire were used to assess sexual orientation (lesbian, gay, and bisexual [LGB] versus heterosexual) and military experiences and service separation experiences. Of the 99,599 participants, 3.4% identified as LGB. Those service members were more likely than their heterosexual peers to report feeling unimpressed by the quality of unit leadership, unsupported by the military, and negative about the military overall. LGB veterans were more likely than heterosexual peers of the same sex to separate from service for a variety of reasons (e.g., administrative, dissatisfaction with promotions/pay, disability/medical reasons, dissatisfaction with leadership and incompatibility with the military). Less positive military- and separation-specific experiences disproportionately affected LGB service members in this study. Promoting inclusion and increasing support for LGB service members may improve satisfaction with military service and retention.

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Evaluation of a Modified Version of the Posttraumatic Growth Inventory-Short Form BMC Research Methodology 2017 Apr;17(1):69

Kaur N, Porter B, LeardMann CA, Tobin TE, Lemus H, Luxton DD

This study sought to validate a modified measure of posttraumatic growth, personal growth, and change that may occur following trauma. Results indicate that this modified measure may be used to assess well-being at one time point or growth over two time points. Furthermore, the two items assessing spirituality had a strong relationship with each other and may be used alone in future studies.

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Trajectories of Trauma Symptoms and Resilience in Deployed US Military Service Members: A Prospective Cohort Study British Journal of Psychiatry 2012 Apr;200(4):317-23

Bonanno GA, Mancini AD, Horton JL, Powell TM, LeardMann CA, Boyko EJ, Wells TS, Hooper TI, Gackstetter GD, Smith TC, for the Millennium Cohort Study Team

Symptoms of posttraumatic stress (PTS) were examined over time in relation to deployment. Four classes of PTS trajectories were identified for both single and multiple deployers, with over 80% of the deployers exhibiting a stable trajectory of low symptoms (i.e., resilience) pre- to post-deployment. Several factors predicting PTS trajectories were identified, which may direct future research aimed at decreasing the risk of posttraumatic stress disorder among deployers

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New Onset and Persistent Symptoms of Posttraumatic Stress Disorder Self-Reported after Deployment and Combat Exposures: Prospective Population-Based US Military Cohort Study British Medical Journal 2008 Feb;336(7640):366-71

Smith TC, Ryan MAK, Wingard DL, Slymen DJ, Sallis JF, Kritz-Silverstein D, for the Millennium Cohort Study Team

Findings define the importance of PTSD in this population and emphasize that specific combat exposures, rather than deployment itself, significantly affect the onset of PTSD symptoms postdeployment.

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Baseline Self-Reported Functional Health Predicts Vulnerability to Posttraumatic Stress Disorder Following Combat Deployment: Prospective US Military Cohort Study British Medical Journal 2009 Apr;338:b1273

LeardMann CA, Smith TC, Smith B, Wells TS, Ryan MAK, for the Millennium Cohort Study Team

Military service members who screen in the lowest 15% of health prior to combat exposure are more vulnerable to developing postdeployment PTSD.

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