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
Sexual Harassment, Sexual Assault, and Physical Activity Among U.S. Military Service Members in the Millennium Cohort Study Journal of Interpersonal Violence 2019 Mar 2;886260519832904. doi: 10.1177/0886260519832904

Thomas CL, Nieh C, Hooper TI, Gackstetter GD, LeardMann CA, Porter B, Blazer DG; for the Millennium Cohort Study Team

This study examined the association of recent sexual trauma with subsequent physical activity levels among service members. The findings indicate that personnel who experienced sexual assault were more likely to report high levels of physical activity (300+ mins/week), while those who reported sexual harassment were less likely to engage in medium-high levels of physical activity (300-449 mins/week), compared with those without sexual harassment or sexual assault. This study highlights how coping responses to sexual trauma among current military members may be intertwined with physical activity.

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Hypertension in Military Veterans Is Associated With Combat Exposure and Combat Injury Journal of Hypertension 2020 Jul;38(7):1293-1301

Howard JT, Stewart IJ, Kolaja C, Sosnov JA, Rull R, Torres I, Janak JC, Walker LE, Trone DW, Armenta RF

This study examined the association between combat injury and incident hypertension. We found that those who were injured during combat were more likely to develop hypertension. Further, inadequate sleep, having PTSD, and being overweight or obese were associated with developing hypertension. Results highlight the importance of hypertension prevention among those who are injured during their time in service.

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The effect of combat exposure on veteran homelessness Journal of Housing Economics Information 49,101711

Ackerman A, Porter B, Sullivan R

Homelessness is a serious problem among veterans, but how military service contributes to the risk of homelessness is unclear. This study examined the impact of witnessing another's death (a proxy for combat) on likelihood of reporting homelessness. One exposure was associated with a 0.6% increase in homelessness. Extrapolated to the overall population, combat exposure is expected to contribute to 4,600 instances of homeless veterans.

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Millennium Cohort: The 2001-2003 Baseline Prevalence of Mental Disorders in the US Military Journal of Clinical Epidemiology 2007 Feb;60(2):192-201

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

The baseline prevalence of mental disorders in this 22-year longitudinal study compares favorably with other civilian and military populations.

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Millennium Cohort: Enrollment Begins a 21-year Contribution to Understanding the Impact of Military Service Journal of Clinical Epidemiology 2007 Feb;60(2):181-91

Ryan MA, Smith TC, Smith B, Amoroso P, Boyko EJ, Gray GC, Gackstetter GD, Riddle JR, Wells TS, Gumbs G, Corbeil TE, Hooper TI, for the Millennium Cohort Study Team

A foundation report, this describes original enrollment methods and challenges of the Millennium Cohort Study. Characteristics of the first 77,047 participants are detailed and shown to strongly represent the population-based sample of the US military from which they were drawn.

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Sexual Health Difficulties Among Service Women: The Influence of Posttraumatic Stress Disorder Journal of Affective Disorders 2021 Sep 1;292:678-686

Kolaja CA, Schuyler AC, Armenta RF, Orman JA, Stander VA, LeardMann CA

Sexual health of service women was found to be negatively impacted by recent combat deployment and sexual assault. Post-traumatic stress disorder(PTSD) mediated the associations of recent combat deployment and sexual assault with sexual health difficulties. Some military factors (i.e., service branch, component, paygrade) were associated with sexual health difficulties among service women. Findings indicate that effective treatment of PTSD may mitigate sexual health issues.

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Problematic Anger and Economic Difficulties: Findings from the Millennium Cohort Study Journal of Affective Disorders 2022 Jan 15;297:679-68

Adler AB, LeardMann CA, Yun S, Jacobson IG, Forbes D; Millennium Cohort Study Team

Of 95,895 participants, 17.4% screened positive for problematic anger. Problematic anger was significantly associated with involuntary job loss and financial problems, adjusting for demographics, military characteristics, disabling injury, and behavioral health factors. Among veterans, problematic anger was associated with unemployment and homelessness after adjustment for covariates. These findings suggest it may be useful for military leaders, veteran organizations, and policy makers to support the adjustment and financial health of military personnel and veterans by proactively addressing problematic anger.

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A Comparison of the PRIME-MD PHQ-9 and PHQ-8 in a Large Military Prospective Study, The Millennium Cohort Study Journal of Affective Disorders May 2013; 148(1): 77-83

Wells TS, Horton JL, LeardMann CA, Jacobson IG, and Boyko EJ

The PHQ-9 is a validated tool for depression screening, however recently an abbreviated version (PHQ-8) is increasingly being used in survey research that excludes the last and most sensitive item. This study compared the performance of the PHQ-8 with the PHQ-9 in a large, population-based sample of current and former military service members. Excellent agreement was detected between the two instruments, suggesting that the PHQ-8 performs well when screening for depression in similar populations.

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Longitudinal Assessment of Mental Disorders, Smoking, and Hazardous Drinking Among a Population-Based Cohort of US Service Members Journal of Addiction Medicine 2014 Jul-Aug;8(4):271-281

Smith TC, LeardMann CA, Smith B, Jacobson IG, Miller SC, Wells TS, Boyko EJ, Ryan MAK

This study investigated mental disorders in association with hazardous drinking and cigarette smoking. These prospective data highlight the inter-related nature of these symptoms and behaviors and the potentially complex bi-directional causal pathway. Military health professionals should consider the constellation of potential behaviors and symptoms during the treatment of specific mental health illnesses and negative health behaviors.

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Longitudinal Examination of the Influence of Individual Posttraumatic Stress Disorder Symptoms and Clusters of Symptoms on the Initiation of Cigarette Smoking Journal of Addiction Medicine Sep/Oct;12(5):363-372

Seelig AD, Bensley KM, Williams EC, Armenta RF, Rivera AC, Peterson AV, Jacobson IG, Littman AJ, Maynard C, Bricker JB, Rull RP, Boyko EJ for the Millennium Cohort Study Team

This study examined the risk for smoking initiation by each of the 17 PTSD symptoms that characterize the disorder. No significant associations between specific PTSD symptoms and subsequent smoking initiation were observed in this study population. Among the subsample who screened positive for PTSD, "feeling irritable or having angry outbursts" and "feeling as though your future will somehow be cut short" were associated with a higher risk of subsequent smoking initiation.

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