Objective: To evaluate patient post-intensive care syndrome (PICS-P) and caregiver burden 3 months after discharge from the Intensive Care Unit (ICU) and determine the impact of different components of PICS-P upon caregiver burden. Design: A prospective observational study was conducted over 26 months (January 2013–February 2015). Setting: Medical-surgical ICU and follow-up consultation in Portugal. Patients or participants: Patients discharged after a minimum of 2 days in the ICU.