Table 4.

Regression Analysis- Severity of Depression and Cognitive/Psychosocial

Variable	B (Standard error)	tdf	P value
ASI
Medical
Constant	-.052 (.103)	t3= -.508	p= .61
HAM-D	.009 (.003)	t3= 2.81	p= .01*
Age	.003 (.002)	t3= 1.27	p= .21
Joints per day	.002 (.003)	t3= .50	p= .62
Mental Status
Constant	.176 (.069)	t3= 2.55	p= .01
HAM-D	.018 (.002)	t3= 8.60	p <.0001*
Age	-.001 (.002)	t3= -.90	p= .37
Joints per day	.000 (.002)	t3= -.38	p= .70
Family/social
Constant	.066 (.083)	t3= .80	p= .43
HAM-D	.017 (.003)	t3= 6.66	p <.0001*
Age	.000 (.003)	t3= .12	p= .91
Joints per day	-.001 (.002)	t3= -.42	p= .68
Drug
Constant	.220 (.046)	t3= 4.74	p<.0001
HAM-D	.004 (.001)	t3= 2.58	p= .012*
Age	.000 (.001)	t3= -.35	p= .72
Joints per day	-2.60E-5 (.001)	t3= -.02	p= .99
CALCAP
Simple reaction time mean
Constant	303.609 (33.016)	t3= 9.20	p<.0001
HAM-D	-1.945 (1.023)	t3= -1.90	p= .06*
Age	1.863 (.774)	t3=2.41	p= .02
Joints per day	-.631 (.967)	t3= -.65	p= .52
SR reaction time
Constant	574.737 (45.499)	t3=12.63	p<.0001
HAM-D	-3.730 (1.410)	t3= -2.65	p= .01*
Age	-.049 (1.067)	t3= -.05	p= .96
Joints per day	-.279 (1.333)	t3= -.21	p= .84
SR Accuracy
Constant	.761 (.095)	t3=7.97	p<.0001
HAM-D	.007 (.003)	t3= 2.50	p= .01*
Age	.000 (.002)	t3= .13	p= .90
Joints per day	-.001 (.003)	t3= -.48	p= .63