Table 4.

Means (SDs), univariate F values, and effect sizes (ESs) for outcome variables at postintervention and 1-month follow-up.

Variable	Baseline		Postintervention						Follow-up
	Intervention, mean (SD)	Control, mean (SD)	Intervention, mean (SD)	Control, mean (SD)	F test (df)	P value	ESa	Intervention, mean (SD)		Control, mean (SD)	F test (df)	P value	ES
PSM-9b	38.5 (9.72)	37.0 (9.40)	32.5 (9.41)	33.7 (9.16)	4.82 (1,261)	.03 c	.018	33.7 (8.89)		34.8 (9.70)	3.89 (1,261)	.05	.015
GAD-7d	6.81 (4.62)	6.37 (4.52)	5.47 (3.94)	5.95 (4.47)	4.99 (1,261)	.03	.019	5.92 (4.33)		5.90 (4.22)	0.094 (1,261)	.76	.000
PHQ-9e	7.35 (5.11)	6.78 (5.44)	5.76 (4.29)	5.78 (4.36)	0.613 (1,261)	.43	.002	5.73 (4.23)		6.06 (4.54)	1.80 (1,261)	.18	.007

^aESs of 0.01=small, 0.06=moderate, 0.14=large [63].

^bPSM-9: Psychological Stress Measure-9.

^cItalicized values indicate significant P values at .05.

^dGAD-7: Generalized Anxiety Disorder-7.

^ePHQ-9: Patient Health Questionnaire-9.