Our paper reports on a systematic review of crime concentration studies over the last 35 years. We identify 47 papers that report on crime concentrations at a micro geographic unit of analysis. These papers produced 49 estimates of general crime concentration for crime incidents at streets segments for a specific cumulative proportion of crime. The median concentration for these estimates is 50 % of crime found at 4.5 % of streets, and 25 % of crime at 1.25 % of streets. The bandwidth for 50 % crime concentration is 9.3 % (1.7–11.0 %), and for 25 % crime concentration 3.0 % (0.4–3.4 %). Using the interquartile range to exclude outliers, we found a bandwidth of 2.5 % (3.2–5.7 %) for 50 % of crime, and 1.4 % (0.8–2.2 %) for 25 % of crime. Crime concentration was generally stronger for specific types of crime, and bandwidths of concentration were generally smaller. Using alternative measures of crime and different micro geographies produces similar conclusions regarding strong crime concentration at place with narrow bandwidths. Our review shows that a general framework of a law of crime concentration applies across a large number of cities across many regions around the world.

中文翻译：

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犯罪集中在微观场所：证据审查


我们的论文报告了对过去 35 年犯罪集中度研究的系统回顾。我们确定了 47 篇报告微观地理分析单位犯罪集中度的论文。这些论文对特定累积犯罪比例的街道犯罪事件的一般犯罪集中度进行了 49 项估计。这些估计的中值集中度是 50% 的犯罪发生在 4.5% 的街道上，25% 的犯罪发生在 1.25% 的街道上。 50% 犯罪集中度的带宽为 9.3% (1.7–11.0%)，25% 犯罪集中度的带宽为 3.0% (0.4–3.4%)。使用四分位数范围排除异常值，我们发现 50% 的犯罪的带宽为 2.5% (3.2–5.7%)，25% 的犯罪的带宽为 1.4% (0.8–2.2%)。对于特定类型的犯罪，犯罪集中度通常较高，而集中度的带宽通常较小。使用犯罪的替代措施和不同的微观地理区域可以得出类似的结论，即犯罪集中在带宽狭窄的地方。我们的审查表明，犯罪集中法的总体框架适用于世界各地许多地区的许多城市。