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

Published in final edited form as: Cytokine. 2012 Mar 24;58(3):437–447. doi: 10.1016/j.cyto.2012.02.015

Table 4.

Symptom severity scores for the total sample and differences in symptom severity scores among the latent classes

Symptom scores at enrollment	Total sample N=253	Low Depression & Low Pain (1) N=210 83.0%	High Depression & Low Pain (2) N=12 4.7%	All High (3) N=31 12.3%	p-value post-hoc contrasts
Symptom scores at enrollment	Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)	p-value post-hoc contrasts
CES-D scores	8.8 (8.2)	5.9 (4.7)	20.6 (6.8)	24.5 (5.0)	p<.0001 3>1; p<.0001
GSDS scores	38.9 (18.6)	35.3 (15.4)	27.5 (12.0)	68.1 (14.6)	p<.0001 3>1 and 2; p<.0001
LFS scores for evening fatigue	4.3 (2.0)	4.1 (2.0)	4.4 (2.6)	5.6 (1.3)	p<.0001 3>1; p<.0001
Worst pain intensity scores	1.9 (3.2)	1.5 (2.9)	0.8 (2.7)	4.7 (3.7)	p<.0001 3>1 and 2; p=.001

CES-D = Center for Epidemiologic Studies-Depression Scale; GSDS = General Sleep Disturbance Scale; LFS = Lee Fatigue Scale; SD= standard deviation