Flow chart of intensive care unit (ICU) patients with advance directives. After exclusion of 212 (16%) patients, there were 1121 ICU patients for analysis. A minority (176, 15.7%) had a living will. Of these, 137 (78%) had a combined/hybrid LW-health care proxy (HCP), 34 (19%) had separate LW and HCP documents (29 were dated within 30 days of each other), and 5 (3%) patients had a LW alone.