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
Deployment-Related Depression Screening Results, 2001-2008: Comparing Clinical vs. Research Surveys American Journal of Preventative Medicine 2014 Nov;47(5):531-540

Welsh MM, PhD, Federinko SP, Burnett DG, Gackstetter GD, Boyko EJ, Seelig AD, Wells TS, and Hooper TI

This study compared depression symptoms reported on military-linked surveys, post-deployment health assessments, with responses from confidential surveys of the Millennium Cohort Study and then evaluated whether any factors were associated with discrepant responses. Moderate agreement was observed between paired survey responses. A higher proportion of active duty members, unmarried participants, and new accessions into military service endorsed depression symptoms on the confidential survey but not the military-linked survey. This study identifies potential subgroups to target for improving follow-up care for optimal mental health.

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Deployment, Combat, and Risk of Multiple Physical Symptoms in the US Military: A Prospective Cohort Study Annals of Epidemiology 2016 Feb;26(2):122-8

McCutchan PK, Liu X, LeardMann CA, Smith TC, Boyko EJ, Gore KL, Freed MC, Engel CC

This study examined longitudinal trends in multiple physical symptoms and its relationship to deployment among US military service members and veterans. Those who had deployed and experienced combat were significantly more likely to report multiple physical symptoms at each time point compared with those not deployed and those who deployed without combat, after adjustment for demographic, military, and health characteristics. Longitudinal trends indicate that the probability of reporting multiple physical symptoms has increased consistently over time only for those deployed, regardless of combat experience.

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Deployment Experiences and Motor Vehicle Crashes Among US Service Members American Journal of Preventive Medicine 2014;46(4):350-358.

Woodall KA, Jacobson IG, Crum-Cianflone NF

Findings indicate experiencing combat during deployment and multiple deployments are strong predictors for a motor vehicle crash (MVC) within the first six months of returning home from deployments in support of Iraq and Afghanistan among U.S. military members. These data provide critical information for targeting prevention strategies to decrease MVCs among personnel postdeployment.

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Demographic and Occupational Predictors of Early Response to a Mailed Invitation to Enroll in a Longitudinal Health Study Biomed Central Medical Research Methodology 2007 Jan;7:6

Chretien JP, Chu LK, Smith TC, Smith B, Ryan MAK, for the Millennium Cohort Study Team

Those who respond first to study invitations, whether to participate or decline, have distinct characteristics within the study population. This information can help structure recruitment efforts.

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Comparing Self-Reported Physical Activity and Sedentary Time to Objective Fitness Measures in a Military Cohort Journal of Science and Medicine in Sport 2019 Jan;22(1):59-64

de la Motte SJ, Welsh MM, Castle V, Burnett D, Gackstetter GD, Littman AJ, Boyko EJ, and Hooper TI

This was a cross-sectional study of 10,105 Air Force Millennium Cohort participants who completed a physical fitness assessment (PFA) in 2007-2008. Linear regression was used to relate objective PFA measures to self-reported physical activity (PA) and sedentary behavior, and logistic regression was used to examine the risk of PFA failure associated with these self-reported measures. After controlling for demographic characteristics, BMI, and smoking status, we found self-reported PA and screen time were associated with some objective PFA measures, including VO2Max and abdominal circumference. However, screen time alone was associated with odds of PFA failure.

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Combat Deployment is Associated with Sexual Harassment or Sexual Assault in a Large, Female Military Cohort Women's Health Issues 2013 Jul-Aug;23(4):e215-23

LeardMann CA, Pietrucha A, Magruder KM, Smith B, Murdoch M, Jacobson IG, Ryan MAK, Gackstetter G, Smith TC, for the Millennium Cohort Study Team

Among female service members, the 3-year cumulative incidence of sexual harassment was 9.4% and sexual assault was 2.1%. Significant risk factors for sexual trauma included prior deployment with combat experience, serving as a Marine, younger age, recent marital separation or divorce, positive screen for a prior mental health condition, moderate/severe life stress, and prior sexual trauma experiences. Understanding the factors associated with sexual harassment and assault can inform future policy and prevention efforts in order to eliminate sexual trauma.

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Combat and Trajectories of Physical Health Functioning in U.S. Service Members American Journal of Preventative Medicine 2019 Nov;57(5):637-644

Porter B, Bonanno GA, Bliese PD, Phillips CJ, Proctor SP for the Millennium Cohort Study Team

Combat is detrimental to long-term physical health functioning among deployed service members, but other pre-deployment modifiable factors like body size and smoking status had stronger associations with subsequent trajectories. This indicates the negative impact of combat may be mitigated through pre-deployment healthy behaviors.

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Cigarette Smoking and Military Deployment: A Prospective Evaluation American Journal of Preventive Medicine 2008 Dec;35(6):539-46

Smith B, Ryan MAK, Wingard DL, Patterson TL, Slymen DJ, Macera CA, for the Millennium Cohort Study Team

Findings suggest an increase in smoking initiation and recidivism among deployers and highlight the importance of prevention strategies pre, during, and post deployment.

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Chronic Multisymptom Illness: A Comparison of Iraq and Afghanistan Deployers with 1991 Gulf War Veterans American Journal of Epidemiology 2014;180(12):1176-1187

Smith TC, Powell TM, Jacobson IG, Smith B, Hooper TI, Boyko EJ, Gackstetter GD

These data highlight a difference in CMI reporting when comparing deployed to non-deployed military members. While symptom reporting in this contemporary Cohort occurred less frequently than in the historical 1991 GW cohort, increased CMI reporting was noted among deployed compared to non-deployed contemporary Cohort members.

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Changes in Meeting Physical Activity Guidelines After Discharge from the Military Journal of Physical Activity Health 2015 May;12(5):666-674

Littman AJ, Jacobson IG, Boyko EJ, Smith TC

Using data from Millennium Cohort Study participants, we investigated changes in meeting federal Physical Activity Guidelines for moderate-to-vigorous activity (MVPA) following military discharge. MVPA declined more in those who were discharged than those who were not (-17.8 percentage points vs. -2.7 percentage points), with greater declines in former active-duty personnel, those who had deployed with combat exposures, had 14-25 years of service, and had been discharged more recently (<1 year prior). Reductions in MVPA were substantial and unexpected. Increased understanding of transitional periods that may benefit from interventions to mitigate declines in physical activity will help prevent excess weight gain and physical inactivity-associated health consequences.

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