. Author manuscript; available in PMC: 2013 Jan 1.

Published in final edited form as: Neuropsychology. 2011 Dec 5;26(1):71–80. doi: 10.1037/a0025119

Table 3. Correlations (r) between the factors in the unconditional and conditional models.

	UPDRS intercept	UPDRS slope	AS intercept	AS slope	BDI intercept
Unconditional Model
UPDRS intercept	-
UPDRS slope	-.094	-
AS intercept	.429^**	-.101	-
AS slope	-.098	.340	-.154	-
BDI intercept	.376^**	-.071	.655^**	.073	-
BDI slope	-	-	-	-	-

Conditional Model
UPDRS intercept	-
UPDRS slope	-.116	-
AS intercept	.391^**	-.119	-
AS slope	-.150	.432⁺	-.178	-
BDI intercept	.407^**	-.021	.654^**	.060	-
BDI slope^a	-	-	-	-	-

Correlations involving the BDI slope could not be estimated due to an inability to estimate its random variance

Note. UPDRS=Unified Parkinson's Disease Rating Scale (motor portion); AS=Apathy Scale; BDI=Beck Depression Inventory

^**

p<.001

⁺

p<.10