This DataWatch uses data from the 1993 Employee Health Care Value Survey (E
HCVS) to compare the experiences of respondents with and without chronic il
lnesses under managed care. After controlling for potential confounders, we
found that chronic illness was associated with increased odds of dissatisf
action in both independent practice association plans and prepaid group pra
ctices, but not under fee-for-service coverage. Chronic illness appeared to
exacerbate difficulties and to attenuate the benefits experienced by healt
hy persons under managed care. We conclude that persons with chronic illnes
ses may be at particular risk under managed care; their experiences may war
rant particular attention when health plan performance is being monitored.