TABLE 1.

Demographic and disease characteristics

	Mean	SD	Range
Demographic (N = 71)
Age	64.0	10.0	[31, 87]
Education	15.1	2.8	[10, 20]
Male/female	48/23
Disease
Hoehn & Yahr	2.4	.58	[2, 4]
UPDRS “on”	28.7	11.4	[10, 53]
UPDRS “off”	39.6	15.4	[12, 81]
Months with symptoms	121.7	56.4	[27, 277]
LED	846.7	413.4	[100, 1951]

Disease data were gathered for a subset of patients (Hoehn & Yahr N = 53, UPDRS “on” N = 55, months with symptoms N = 60, LED N = 61).

UPDRS, Unified Parkinson Disease Rating Scale; LED, levodopa equivalent dose.