The police must on occasion use physical force and weapons in order to apprehend and control subjects and fulfil the police function. It is inevitable that some of these interactions will result in injuries to both subjects and officers, with a range of both tangible and intangible harms and costs. It is therefore important to study injuries related to the use of force with an eye toward identifying opportunities to minimize injury and reduce the harms and costs. Injuries to both subjects and officers were examined in a sample of more than 10,000 use of force incidents drawn from 81 agencies located in 8 states. In addition to describing injury rates across a broad spectrum of situational and agency characteristics, we present multilevel logistic regression models predicting subject and officer injury. Among key findings, we report that the likelihood of injury for both subjects and officers is lower when force incidents end quickly and with the minimal necessary superior level of force relative to subject resistance, and higher for both subjects and officers when subjects flee. At the agency level, we find that the likelihood of injury varies by agency size and type. Finally, we explored possible higher-level variation and found that agencies in the sample from Midwestern states (primarily Wisconsin) have substantially lower injury rates that appear to be associated with their less frequent use of weapons and greater reliance on low-level physical force tactics, as compared to agencies in the sample from Western and other states.

警察有时必须使用武力和武器，以逮捕和控制主体并履行警察职能。这些互动中的某些互动不可避免地会导致受试者和警官受伤，并产生一系列有形和无形的伤害和代价。因此，重要的是要研究与使用武力有关的伤害，以期找出减少伤害，减少伤害和降低成本的机会。对位于8个州的81个机构的10,000多起使用武力事件的样本进行了调查，调查对象和军官的伤害。除了描述各种情况和机构特征中的伤害率之外，我们还提供了预测受试者和官员伤害的多级逻辑回归模型。在主要发现中，我们报告说，当部队事件迅速结束并且相对于受试者抵抗力具有最小的必要上乘力水平时，受试者和军官受伤的可能性都较低，而受试者逃跑时受试者和军官受伤的可能性更高。在代理商一级，我们发现受伤的可能性因代理商规模和类型而异。最后，我们探索了可能发生的更高级别的变化，发现来自中西部各州（主要是威斯康星州）的样本中的机构伤害率明显较低，这似乎与他们使用武器的频率降低以及对低级物理武力战术的依赖性更大有关，与来自西方和其他州的样本中的代理商相比。