方法：以整群抽样方式选取海军某驱逐舰支队官兵790人，对全年军事训练伤进行前瞻性流行病学调查。
Methods: 790 crew men receiving special training from the naval destroyers were selected by cluster sampling and investigated with prospective study.
方法：以整群抽样方式选取海军某驱逐舰支队官兵790人，对全年军事训练伤进行前瞻性流行病学调查。
Methods: 790 crew men receiving special training from the naval destroyers were selected by cluster sampling and investigated with prospective study.
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