Predictors of Risk and Resilience for Posttraumatic Stress Disorder Among Ground Combat Marines: Methods of the Marine Resiliency Study
The figure shows 3 sources of data: archival data, direct assessments, and ancillary studies. Archival data are from the Career History Archival Medical and Personnel System (CHAMPS) database. The 5 components of archival data are 1) medical diagnosis, 2) hospitalizations, 3) outpatient health care visits, 4) duty status, and 5) separation data and reason. Direct assessments are of 5 types, some of which have subcomponents, listed in parentheses: 1) historical (self-report questionnaires), 2) biological (blood, urine, and saliva; pulse and blood pressure; body dimensions; physiological reactivity), 3) neuropsychological (neurocognitive performance), 4) psychiatric and medical (clinical interviews and self-report questionnaires), and 5) psychosocial (self-report questionnaires). Ancillary studies are of 2 types: genetics (genome-wide association study) and genomics (gene expression study).
Figure 1. Data sources available to the Marine Resiliency Study.
This figure depicts the number of Marines who attended the initial study briefing (n = 2,978) and the number of Marines still participating, the number who withdrew and declined future participation, and the number who were contacted and unavailable for follow-up visit. A total of 2,610 Marines who heard the briefing consented (87.6%) and were assessed; 17 of these Marines subsequently withdrew and declined participation. At T1 2,593 Marines completed the predeployment assessment; of these, 67 withdrew and declined future participation, and 295 were contacted and unavailable for follow-up visits. At T2, the 1-week postdeployment assessment, 2,231 (86.0%) Marines were assessed, of whom 25 withdrew and declined future participation; 603 were contacted and unavailable for follow-up visits. At T3, the 3-month postdeployment assessment, 1,898 (73.2%) Marines were participating; 19 withdrew and declined future participation; 453 were contacted and unavailable for follow-up visits. At T4, the 6-month postdeployment assessment, 1,609 (62.1%) Marines were participating, and 420 Marines from battalion 4 were awaiting data collection.
Figure 2. Subject recruitment and retention for the Marine Resiliency Study (N = 2,610) through September 2011.
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