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Due to seemingly mixed empirical results, questions persist about the possible role of deployments and combat exposure. We conducted a narrative review and meta‐analysis of 22 published studies to integrate findings regarding the relationship of deployment‐related predictors (i.e., deployment, deployment to a combat zone, combat experience, and exposure to specific combat events) with suicide‐related outcomes (i.e., suicide ideation, attempt, and death). Across all predictors and outcomes, the combined effect was small and positive, r = .08 [0.04, 0.13], and marked by significant heterogeneity, I 2 = 99.9%, Q (21)=4880.16, p < .0001, corresponding to a 25% increased risk for suicide‐related outcomes among those who have deployed. Studies examining the relationship between exposure to killing and atrocities ( k = 5) showed the largest combined effect, r = .12 [0.08, 0.17], and less heterogeneity, I 2 = 84.4%, Q (4)=34.96, p < .0001, corresponding to a 43% increased risk for suicide‐related outcomes among those exposed to killing or atrocity. Implications for theory, research, and clinical practice are discussed.
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