Alternatives to population-based crime rates were first introduced in 1965. Activity-based crime rates derive numerator data from activity-specific crime events, then match these to time spent in the same activities. Activity-based rates can produce a vastly different picture of risk, not captured by population-based rates. Given that numerator and denominator data may be drawn from different sources using different methods, these rates can create a matching challenge. Yet, dramatic results justify that effort. This paper offers new activity-based crime rate calculations for Canada and Australia, then relates these to prior estimates in the USA. Despite data variations among the three nations, activity-based crime rates give us an overall understanding of crime risk not captured by population-based rates.

1965 年首次引入了基于人口的犯罪率的替代方案。基于活动的犯罪率从特定活动的犯罪事件中得出分子数据，然后将这些数据与在相同活动中花费的时间相匹配。基于活动的比率可以产生截然不同的风险图，而不是基于人口的比率。鉴于分子和分母数据可能来自不同的来源，使用不同的方法，这些比率可能会带来匹配挑战。然而，戏剧性的结果证明了这一努力。本文为加拿大和澳大利亚提供了新的基于活动的犯罪率计算，然后将这些与美国先前的估计值联系起来。尽管这三个国家的数据存在差异，但基于活动的犯罪率使我们能够全面了解基于人口的犯罪率未涵盖的犯罪风险。