For anyone interested, here is the full text of the study: https://www.dropbox.com/s/u4s1fcync2gseyl/AirBnB_Report%20FI...

A brief description of how they attempted to control for other factors:

> We also control for demographic and economic changes in neighborhood level by including average household income (in log form), population (in log form), and the shares of college-educated and employed residents in the neighborhood. We also included year and neighborhood-level fixed effects (dummy) variables to control for otherwise uncontrolled-for trends and neighborhood characteristics.