Objectives

To assess the effects of BWCs on prosecutorial and court-related charge outcomes across multiple crime types, including domestic violence charges, crimes committed against police officers, and drug/alcohol charges.

Methods

A cluster-randomized controlled trial with 22 spatiotemporal police units assigned to BWCs and 17 assigned to control conditions. Data from the State Attorney’s Office were used to track convictions, adjudication withheld dispositions, and declined prosecutions for both experimental and control charges. A series of multilevel logistic and negative binomial regression models were used to estimate the effect of BWC footage on charge outcomes.

Outcomes

BWCs led to a significantly higher proportion of crimes against police officers resulting in convictions or adjudication withheld outcomes, and a significantly higher proportion of domestic violence charges resulting in convictions alone, compared to control charges. However, after the clustering effect was taken into account, only the effect of BWCs on crimes against police officers remained statistically significant.

Conclusion

These early results suggest that BWCs have significant evidentiary value that varies by crime type. BWCs may be best suited to capture evidence of crimes committed against police officers and potentially in domestic violence offenses as well.

中文翻译：

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眼见为实：随身摄像机对法庭结果的影响，迈阿密海滩的一项集群随机对照试验

目标

评估 BWC 对多种犯罪类型的起诉和法院相关指控结果的影响，包括家庭暴力指控、针对警察的犯罪和毒品/酒精指控。

方法

一项集群随机对照试验，其中 22 个时空警察单位被分配到 BWC，17 个被分配到控制条件。来自州检察官办公室的数据被用于跟踪定罪、裁定暂缓处置和拒绝对实验性和控制性指控的起诉。一系列多级逻辑和负二项式回归模型用于估计 BWC 镜头对充电结果的影响。

结果

与控制指控相比，《生物武器公约》导致针对警察的犯罪导致定罪或判决未获结果的比例显着更高，而仅导致定罪的家庭暴力指控的比例显着更高。然而，在考虑聚类效应后，只有 BWC 对针对警察的犯罪的影响在统计上仍然显着。

结论

这些早期结果表明，生物武器公约具有重要的证据价值，因犯罪类型而异。BWC 可能最适合收集针对警察的犯罪证据，也可能是家庭暴力犯罪的证据。