Readmission rates

I am doing some work to reduce readmissions to our inpatient acute psychiatric unit in a general medical hospital. But I don't know how to get comparison ("benchmark"?) data from other similar hospitals. Our definition of readmission is unplanned readmission to our unit within 30 days. Ours is 430 bed acute medical center with a psychiatric unit that has a daily census of about 18 - 20 patients. I hope someone can point me in the right direction.

• readmission rates by Ellen Dornelas, 1/25/99