Time series analysis

Linking the Workforce Crisis, Crime, and Response Time

We show how agencies can use data to determine the effect of patrol staffing levels on response times

Comparing 911 and emergency hotline calls for domestic violence in seven cities: What happened when people started staying home due to COVID-19?

We examine the effect of COVID-19 on domestic violence, as measured by daily calls to 911 and Victim Service Agencies’ emergency hotlines.

Elevated Police Turnover following the Summer of George Floyd Protests: A Synthetic Control Study

Police resignations - but not retirements or involuntary separations - spiked significantly in a large western department following the George Floyd protests.

The immediate and long-term effects of COVID-19 stay-at-home orders on domestic violence calls for service across six U.S. jurisdictions

In 5 of 6 jurisdictions, domestic violence calls for police service spiked during stay-at-home orders

Mandatory Sexual Assault Kit Testing Policies and Arrest Trends: A Natural Experiment

We evaluated the effect of a mandatory SAK testing policy on the monthly rape arrest rate in a western jurisdiction

Is the Number of Citizens Fatally Shot by Police Increasing in the Post-Ferguson Era?

No.

A War on Cops? The Effects of Ferguson on the Number of U.S. Police Officers Murdered in the Line of Duty

We find no evidence for a _war on cops_, as measured by officers murdered in the line of duty from 2010 to 2016.