. Author manuscript; available in PMC: 2011 Feb 28.

Published in final edited form as: Mov Disord. 2009 Apr 15;24(5):677–683. doi: 10.1002/mds.22441

TABLE 4.

Correlations (Pearson’s r) between apathy scales and patient characteristics

	AS	LARS total	IC	AI	E	SA	BDI-II	UPDRS “on”	UPDRS “off”	HY	LED
AS
LARS total	0.615^*
IC	0.605^*	0.904^*
AI	0.420^*	0.725^*	0.506^*
E	0.333^**	0.587^*	0.356^*	0.268^**
SA	0.229	0.478^*	0.322^*	0.251^**	0.181
BDI-II	0.582^*	0.450^*	0.448^*	0.344^*	0.207	0.730
UPDRS “on”	0.385^**	0.469^*	0.396^*	0.378^*	0.237	0.321^**	0.382^*
UPDRS “off”	−0.061	0.043	−0.038	0.079	0.073	0.101	0.029	0.248
HY	0.138	0.166	0.121	0.117	0.174	0.078	0.301^**	0.651^*	0.354^*
LED	−0.058	0.024	−0.070	0.178	0.087	−0.058	−0.004	0.037	0.139	0.255
Months with symptoms	−0.099	−0.157	−0.178	0.031	−0.171	−0.067	0.338^**	0.062	0.338^**	0.328^**	0.473^*

P < 0.001.

^**

P < 0.05.

AS, Apathy Scale; LARS, Lille Apathy Rating Scale; IC, intellectual curiosity; AI, action initiation; E, emotion; SA, self awareness; BDI-II, Beck Depression Inventory, 2nd edition; UPDRS-III, Unified Parkinson’s Disease Rating Scale, Motor; HY, Hoehn & Yahr Stage Scale; LED, levodopa equivalent dosage.