This study employed a microsynthetic control method to evaluate the impact of the newly introduced bicycle patrol unit in the Kensington neighborhood of Philadelphia, which is well-known as a major drug market. The findings reveal that the bicycle patrol unit led to a notable reduction in social disorder crimes, which was one of the primary objectives of the patrol officers. However, it also resulted in a significant increase in the number of narcotic crimes, violent person crimes, and shooting offenses. The amount of total crimes and property crimes remained unchanged.

中文翻译：

---

巡逻东海岸最大毒品市场：警用自行车部队影响的综合控制分析

这项研究采用微合成控制方法来评估费城肯辛顿社区新引入的自行车巡逻队的影响，费城肯辛顿社区是众所周知的主要毒品市场。调查结果显示，自行车巡逻队显着减少了社会扰乱犯罪，这是巡逻人员的主要目标之一。然而，这也导致毒品犯罪、暴力犯罪、枪击犯罪数量大幅增加。犯罪总数和财产犯罪数量保持不变。