Upcoming at the American Society of Evidence Based Policing Conference, I have a talk Thursday morning (9:45-10:00), How long to conduct your experiment.

The talk goes over some of the simple metrics I have created to help plan how long to conduct your intervention. Such as how long to evaluate your hot spots intervention, or purchase to increase arrest rates, etc.

I have prepared a ton of different resources. The main one is a web-based application (a WASM-based app with R as the backend) where you can enter your inputs and generate a graph showing how precise your parameter estimates are:

The help page includes citations and additional materials, but here is a brief rundown:

• I have the math details in this github repo, see the methodology.pdf. It also includes notes on how I used different LLM tools to produce the webpage and the method materials. Each of the applications allows you to download the R code used to generate the graphs and tables.

• I have created a series of YouTube videos demonstrating the application (WDD, IRR, Proportion tests)

• I have posted my slides for the ASEBP talk

See you all in DC at ASEBP in a few weeks!