Background: The major health care organizations in a geographically de
fined area implemented an extensive, collaborative advance directive e
ducation program approximately 2 years prior to this study. Objectives
: To determine for a geographically defined population the prevalence
and type of end-of-life planning and the relationship between end-of-l
ife plans and decisions in all local health care organizations, includ
ing hospitals, medical clinics, long-term care facilities, home health
agencies, hospices, and the county health department. Methods: For mo
re than 11 months, end-of-life planning and decisions were retrospecti
vely studied for all adult decedents residing in areas within 5 ZIP co
des. These decedents were mentally capable in the 10 years prior to de
ath and died while under the care of the participating health care org
anizations. Data were collected from medical records and death certifi
cates. Treating physicians and decedent proxies were also contacted fo
r interviews. Results: A total of 540 decedents were included in this
study. The prevalence of written advance directives was 85%. Almost al
l these documents (95%) were in the decedent's medical record. The med
ian time between advance directive documentation and death was 1.2 yea
rs. Almost all advance directive documents requested that treatment be
forgone as death neared. Treatment was forgone in 98% of the deaths.
Treatment preferences expressed in advance directives seemed to be con
sistently followed while making end-of-life decisions. Conclusions: Th
is study provides a more complete picture of death, end-of-life planni
ng, and decision making in a geographic area where an extensive advanc
e directive education program exists. It indicates that advance planni
ng can be prevalent and can effectively guide end-of-life decisions.