We studied symptom burden and associated factors in a cohort of 1582 seriou
sly ill patients admitted at five tertiary care academic centers in the U.S
. between June 1989 and June 1991 in the SUPPORT Study. Logistic regression
was used to test the independent association of symptoms with demographic,
psychological, chronic, and acute illness measures. Pain, dyspnea, anxiety
, and depression caused the greatest symptom burden. The following symptoms
accounted for 67.3% of all symptoms that were at least moderately severe a
t least had of the time: dyspnea (19.2%), pain (17.6%), pain/dyspnea (7.6%)
, anxiety (5.9%), depression (5.0%), anxiety/depression (4.4%), anxiety/dep
ression/pain/dyspnea (3.9%), and nausea (3.7%). Hospital, male gender, dise
ase category, more comorbidities, more dependencies in activities of daily
living prior to illness, and poorer quality of life were associated with gr
eater symptom burden. Seriously ill patients have a high symptom burden. Be
tter strategies will be needed to control symptoms in these patients. (C) U
.S. Cancer Pain Relief Committee, 1999.