Skip to main content

View full-text article in PMC

. Author manuscript; available in PMC: 2010 May 1.

Published in final edited form as: Biol Psychol. 2009 Feb 23;81(2):131–134. doi: 10.1016/j.biopsycho.2009.02.003

Table 1.

Descriptive statistics and bivariate correlations (n = 173)

	M (SD) or %	Correlation coefficients
Demographic/general health		CRP	CES-D Total	CES-D Neg Mood	CES-D Somatic
Age (years)	58.9 (10.4)	.08	−.13	−.06	−.05
Body mass index (kg/m²)	28.0 (6.1)	.13	.12	.06	.18^*
Ethnicity (Caucasian)^a	95%	.04	.03	.07	.08
College/graduate degree^a	56%	.15^*	−.03	−.04	.04
Married^a	66%	.14	−.10	−.18^*	−.07
Postmenopausal^a	80%	.11	−.08	−.05	.02
Current smoker^a	8%	−.05	.00	.10	.10
Rheumatoid arthritis variables
RA duration (years)	16.3 (10.8)	.03	−.02	−.04	−.05
Current corticosteroid use^a	44%	.16^*	.12	.06	.13
Current use of TNF inhibitors^a	31%	−.19^*	.03	.01	.07
Pain in past week (15 cm VAS)	4.7 (3.4)	.29^***	.17^*	.16^*	.30^***
mHAQ Disability Index (0–3)	0.7 (0.6)	.29^***	.10	.12	.20^**
Physician-rated RA Activity (VAS)	2.5 (2.5)	.33^***	.00	−.02	.07
Physician-rated RA Severity (VAS)	4.9 (3.3)	.21^**	−.03	−.05	.08
Inflammatory markers
C-reactive protein (mg/L)^b	12.5 (18.1)	-	.13	.06	.20^**

^a

Point-biserial.

^b

Correlation computed using log-transformed values.

^*

p < .05

^**

p < .01

^***

p < .001.