Table 3.

Differences Between Intervention Centers (as a Group) and Comparison Center: Continuously Enrolled Members 65 or Older at the Start of the Study Who Had at Least One Health Maintenance Visit

Descriptor	Intervention (n = 843)	Comparison (n = 1,277)	Significance
Female, %	48	54	<.01
Mean age, y	70.3	71.4	<.001
>2 chronic EDC conditions, %	17	23	.001
One or more ER visit, %	15	18	.09
One or more hospitalization, %	3	5	.16
Number (%) with AD prior to study	23 (2.7)	94 (7.4)	<.001
Number of ADs (%) at end of study	87 (10.3)	100 (7.8)	.048

AD, advance directive; EDC, expanded diagnostic clusters; ER, emergency room.