Table 2.

Between-group differences of treatment effects on perceived stress and psychological outcomes, mean (95% CI).

	Yoga group 1 versus control		Yoga group 2 versus control		Yoga group 1 + 2 versus control
	Change	P value	Change	P value	Change	P value
CPSS	−6.7 (−10.9; −2.5)	0.002	−4.7 (−9.2; −0.3)	0.036	−5.7 (−9.5; −2.0)	0.003
CES-D	−4.2 (−7.9; −0.5)	0.028	−4.6 (−8.5; −0.7)	0.02	−4.4 (−7.6; −1.2)	0.008
S-STAI	−5.2 (−10.6; 0.1)	0.056	−6.0 (−11.6; −0.4)	0.037	−5.6 (−10.4; −0.9)	0.021
T-STAI	−5.8 (−10.1; −1.6)	0.007	−5.3 (−9.5; −1.1)	0.014	−5.6 (−9.2; −1.9)	0.003
GSI-score	−7.5 (−12.9; −2.2)	0.006	−8.2 (−13.5; −3.0)	0.002	−7.9 (−12.5; −3.3)	0.001
Bf-S	−7.0 (−14.2; 0.2)	0.057	−6.2 (−13.3; 0.9)	0.087	−6.6 (−12.8; −0.4)	0.036
POMS vigor	0.8 (0.1; 1.4)	0.022	0.6 (0.0; 1.3)	0.06	0.7 (0.1; 1.3)	0.017
POMS fatigue	−1.3 (−2.1; −0.6)	0.001	−1.0 (−1.8; −0.3)	0.009	−1.2 (−1.8; −0.5)	0.001
POMS depression	−0.4 (−1.0; 0.2)	0.20	−0.3 (−0.9; 0.2)	0.239	−0.4 (−0.9; 0.1)	0.154
POMS anger	−0.8 (−1.3; −0.2)	0.007	−0.5 (−1.1; 0.1)	0.084	−0.6 (−1.1; −0.1)	0.012
QOL mental health	0.8 (0.3; 1.3)	0.002	0.6 (0.1; 1.1)	0.022	0.7 (0.2; 1.1)	0.002
QOL physical sum score	0.1 (−0.3; 0.4)	0.72	−0.2 (−0.6; 0.2)	0.269	−0.1 (−0.4; 0.2)	0.653
QOL mental sum score	0.6 (0.1; 1.2)	0.024	0.6 (0.0; 1.1)	0.044	0.6 (0.1; 1.1)	0.012

CPSS: Cohen Perceived Stress Scale; CES-D: Center for Epidemiological Studies Depression Scale; S-STAI: State Anxiety; T-STAI: Trait Anxiety; Bf-S: Zerssen well being scale; GSI: General Severity Index; POMS: Profile of Mood States; QOL: short form-36 Quality of Life.