Time-dependent suicide rates among Army soldiers returning from an Afghanistan/Iraq deployment, by military rank and component.

The trend analysis revealed a significant trend for Senior Enlisted/Warrant Officers with an estimated average annual increase of 3.6% (95% CI [3.0%, 4.2%]) and while the estimated trend for Senior Enlisted/Warrant Officers and Officers were lower (1.1% and − 0.5%, respectively; Table 2 ), no significant differences were observed in pairwise tests for parallelism (i.e., evidence was insufficient to indicate trends differed over time across rank groups; Table 2 and Fig. 1 ).

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