https://orcid.org/0000-0002-4943-7962
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ABSTRACT
Background
Meta-analyses of military deployment involve the exploration of focused associations between predictors and peri and post-deployment outcomes.
Objective
We aimed to provide a large-scale and high-level perspective of deployment-related predictors across eight peri and post-deployment outcomes.
Design
Articles reporting effect sizes for associations between deployment-related features and indices of peri and post-deployment outcomes were selected. Three-hundred and fourteen studies (N = 2,045,067) and 1,893 relevant effects were retained. Deployment features were categorized into themes, mapped across outcomes, and integrated into a big-data visualization.
Methods
Studies of military personnel with deployment experience were included. Extracted studies investigated eight possible outcomes reflecting functioning (e.g., post-traumatic stress, burnout). To allow comparability, effects were transformed into a Fisher’s Z. Moderation analyses investigating methodological features were performed.
Results
The strongest correlates across outcomes were emotional (e.g., guilt/shame: Z = 0.59 to 1.21) and cognitive processes (e.g., negative appraisals: Z = −0.54 to 0.26), adequate sleep on deployment (Z = −0.28 to – 0.61), motivation (Z = −0.33 to – 0.71), and use of various coping strategies/recovery strategies (Z = −0.25 to – 0.59).
Conclusions
Findings pointed to interventions that target coping and recovery strategies, and the monitoring of emotional states and cognitive processes post-deployment that may indicate early risk.
Disclosure statement
No potential conflict of interest was reported by the author(s).