The following manuscripts have been published or are currently in press. Listings are in chronological order, unless otherwise noted.
| Title | Publication | Date/Location |
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| Health of Army Veterinarians and Veterinary Technicians in the Millennium Cohort Study | Journal of the American Veterinary Medical Association | 2021 Apr 1;258(7):767-775 |
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Rivera AC, Geronimo-Hara TR, LeardMann CA, Penix EA, Phillips CJ, Faix DJ, Rull RP, Whitmer DL, Adler AB, for the Millennium Cohort Study Team This analysis assessed the risk of mental health problems, suicidal ideation, psychotropic medication use, problem drinking, sleep quality, and lack of social support among 101 Army veterinarians and 334 veterinary technicians compared with other Army medical professionals (856 physicians and dentists and 6,453 medics, respectively) enrolled in the Millennium Cohort Study. Compared with physicians and dentists, veterinarians had elevated risks for mental health problems, trouble sleeping, and lack of social support after adjusting for important factors such as age, sex, race/ethnicity, financial problems, and deployment status. Veterinary technicians had no significantly elevated risks for any of the adverse outcomes of interest compared with medics. |
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| Comparison of Posttraumatic Stress Disorder Checklist Instruments from Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition vs Fifth Edition in a Large Cohort of US Military Service Members and Veterans | JAMA Network Open | 2021; 4(4): e218072 |
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LeardMann, CA, McMaster HS, Warner S, Esquivel AP, Porter B, Powell TM, Tu XM, Lee WW, Rull RP, Hoge CW, for the Millennium Cohort Study Team To assist in the longitudinal assessment of PTSD spanning the transition between the DSM-IV and DSM-V, we compared the PTSD Checklist-Civilian version (PCL-C) with the PCL for DSM-5 (PCL-5) in a sample of 1,921 servicemembers. There was substantial to excellent agreement when comparing individual items, frequency of probable PTSD, and sum scores; and nearly identical associations with comorbid conditions. Our results provide support that PTSD can be successfully assessed and compared over time with either PCL instrument in veteran and military populations. |
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| Association of Combat Experiences With Suicide Attempts Among Active-Duty US Service Members | JAMA Network Open | 2021;4(2):e2036065 |
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LeardMann CA, Matsuno R, Boyko EJ, Powell TM, Reger MA, Hoge CW, for the Millennium Cohort Study Team Among 57,841 active-duty service members who had deployed, high combat severity and certain specific combat experiences were associated with suicide attempts. However, these associations were mostly accounted for by mental disorders, especially PTSD. Findings suggest that service members who experience high levels of combat or are exposed to certain types of combat experiences, involving unexpected events or those that challenge moral or ethical norms, may have an increased risk of a suicide attempt, either directly or indirectly through mental disorders. |
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| Sexual Health Problems among Service Men: The Influence of Posttraumatic Stress Disorder | Journal of Sex Research | 2021 Jan 11:1-13 |
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Kolaja CA, Roenfeldt K, Armenta RF, Schuyler AC, Orman JA, Stander VA, LeardMann CA Among service men, numerous factors (e.g. older age, lower education, enlisted paygrade, disabling injury, BMI) were associated with sexual health problems. PTSD mediated the associations between stressors (combat deployment and sexual assault) and sexual health outcomes. These findings indicate that sexual health is negatively affected by military-related stressors and comprehensive treatment options are warranted. |
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| Multiple imputation validation study: Addressing unmeasured survey data in a longitudinal design | BMC Medical Research Methodology | 2021 Jan 6;21(1):5 |
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Kolaja CA, Porter B, Powell TM, Rull RP, Millennium Cohort Study Team This study examined the efficiency and feasibility of multiple imputation (MI) to recover data from a question completely missing at a follow-up survey assessment. Specifically, the suicidal ideation item on the depression module of the Patient Health Questionnaire was set to missing on a follow-up survey and then filled in using different MI models. Imputed and self-reported suicidal ideation were similarly associated with the related constructs of sleep duration and smoking status, suggesting that MI allowed for the inclusion of an otherwise missing item as a covariate in statistical models. |
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| Posttraumatic Stress Disorder Symptom Clusters in Service Members Predict New-Onset Depression Among Military Spouses | Journal of Traumatic Stress | 2020 Sep 3. doi: 10.1002/jts.22575 |
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Walter KH, LeardMann CA, Carballo CE, McMaster HM, Donoho CJ, & Stander VA Among spouses of service members with probable posttraumatic stress disorder (PTSD), 14% met criteria for new-onset depression over a 3-year period. The service member’s PTSD symptom cluster of effortful avoidance was associated with an increased risk of new-onset depression in spouses, underscoring the impact of service member psychological symptoms on the spouse. |
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| Longitudinal Investigation of Military-Specific Factors Associated with Continued Unhealthy Alcohol Use Among a Large US Military Cohort | Journal of Addiction Medicine | 2020 Jul-Aug; 14(4): e53–e63 |
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Jacobson IG, Williams EC, Seelig AD, Littman AJ, Maynard CC, Bricker JB, Rull RR, Boyko EJ, for the Millennium Cohort Study Team This study examined military-specific risk factors for continued unhealthy alcohol use (e.g. heavy weekly, heavy episodic, and problem drinking) among service members screening positive on two consecutive surveys. Service members in the Reserve/Guard (compared with Active Duty) and those who separated from military service during follow-up (compared with those remaining on active service) had an elevated risk for continuing unhealthy drinking across all three dimensions of unhealthy alcohol use. |
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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 |
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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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| Magnitude of Problematic Anger and its Predictors in the Millennium Cohort | BMC Public Health | 2020;20(1):1168 |
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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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| Report to the Committees on Armed Services of the Senate and House of Representatives. (July 2020). Section 748 of the National Defense Authorization Act for Fiscal Year 2020 (Public Law 116-92) Initial Report on Millennium Cohort Study Relating to Women of the Armed Forces | ||
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This report is in response to the section 748 of the National Defense Authorization Act (NOAA) for Fiscal Year (FY) 2020 (Public Law 116-92) requirement for the Secretary of Defense to submit a report on "Millennium Cohort Study Relating to Women Members of the Armed Forces" to the Committees on Armed Services of the Senate and the House of Representatives, within 180 days of enactment and annual reports thereafter through January 31, 2022. This initial report describes findings of the Millennium Cohort Study relating to the gynecological and perinatal health of women members of the Armed Forces |
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