Table 3.

Baseline and post-treatment (8-week) scores (means [standard deviations]) on measures of back pain disability and pain severity among participants (N=66).

Back Pain Disabilitya
Group	Baseline	8 weeks		Cohen’sd
Total sample	10.2(4.5)	7.7(4.9)*		.53
CBT1 (n=33)	10.0(4.7)	7.6(5.0)*		.49
SC2 (n=33)	10.4(4.4)	7.8(5.0)*		.55
Pain Severityb
Group	Baseline	8 weeks		Cohen’sd
Total sample	5.3(1.7)	4.1(1.6)*		.73
CBT1 (n=33)	5.0(1.8)	4.1(1.8)*		.50
SC2 (n=33)	5.5(1.6)	4.1(1.5)*		.90
% Self-rated Improvementc
Group	Baseline		8 weeks
Total sample	NA		24.5% (27.2)
CBT1 (n=33)	NA		31.0% (30.4)
SC2 (n=33)	NA		18.5% (22.7)

¹=Cognitive-Behavioral Therapy

²=Supportive Care

^a=Roland-Morris Disability Questionnaire

^b=Numerical Rating Scale

^c=Global Clinical Impressions;

^*Significant changes from baseline to post-treatment scores, p<.05.