Table 2.

Multivariate regression (with post-intervention Patient Health Questionnaire-9 score as dependent variable)

	Unstandardized coefficients		Standardized coefficients		95% confidence interval for β		P value
	β	Std. Error	β	t	Lower bound	Upper bound
(Constant)	8.248	7.321		1.127	-6.417	22.913	0.265
Age	-0.099	0.094	-0.110	-1.057	-0.287	0.089	0.295
Sex	-0.655	1.239	-0.055	-0.529	-3.136	1.826	0.599
SUDS_2_3	0.040	0.317	0.014	0.127	-0.594	0.675	0.899
SUDS_6_7	-0.666	0.281	-0.255	-2.367	-1.230	-0.102	0.021
PHQ_SUM_1	0.563	0.095	0.626	5.948	0.374	0.753	0.000

n = 62, adjusted r² = 52.2%, F = 14.138, P < 0.001.