Table 4.

Results of 3 (group: mental health service provider–presented, peer-presented, or wait-list comparison) × 3 (time: baseline, after the intervention, and follow-up) 2-way mixed ANOVAs on well-being outcomes.

Well-being outcome and measurement		F test (df)	P value	ηp2	1 – β	Chi-square (df)	P value
Stress
	Mauchly test of sphericity—time	N/Aa	N/A	N/A	N/A	17.8 (2)	<.001
	Interaction—Greenhouse-Geisser	1.55 (3.70,396.26)	.19	0.014	.46	N/A	N/A
	Main effect of group (between)	1.03 (2,214)	.36	0.010	.23	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	3.70 (1.85,396.26)	.03	0.013	.68	N/A	N/A
Coping self-efficacy
	Mauchly test of sphericity—time	N/A	N/A	N/A	N/A	1.5 (2)	.48
	Interaction—Greenhouse-Geisser	0.61 (3.97,423.08)	.70	0.006	.20	N/A	N/A
	Main effect of group (between)	0.40 (2,213)	.67	0.004	.11	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	24.52 (1.99,423.08)	<.001	0.103	1	N/A	N/A
Social support
	Mauchly test of sphericity—time	N/A	N/A	N/A	N/A	18.3 (2)	.001
	Interaction—Greenhouse-Geisser	1.94 (3.69,396.52)	.11	0.018	.56	N/A	N/A
	Main effect of group (between)	0.70 (2,211)	.50	0.007	.17	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	7.04 (1.85,396.56)	.001	0.032	.93	N/A	N/A
Social connectedness
	Mauchly test of sphericity—time	N/A	N/A	N/A	N/A	11.3 (2)	.004
	Interaction—Greenhouse-Geisser	1.43 (3.80,399.07)	.22	0.013	.43	N/A	N/A
	Main effect of group (between)	2.11 (2,210)	.12	0.020	.43	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	1.74 (1.90,399.07)	.18	0.008	.36	N/A	N/A
Mindfulness
	Mauchly test of sphericity—time	N/A	N/A	N/A	N/A	8.0 (2)	.02
	Interaction—Greenhouse-Geisser	0.88 (3.86,408.89)	.48	0.008	.28	N/A	N/A
	Main effect of group (between)	0.14 (2,214)	.99	<0.001	.05	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	9.66 (1.93,408.89)	<.001	0.044	.98	N/A	N/A
QoLb (physical health)
	Mauchly test of sphericity—time	N/A	N/A	N/A	N/A	1.5 (2)	.48
	Interaction—Greenhouse-Geisser	0.67 (3.97,417.05)	.62	0.006	.21	N/A	N/A
	Main effect of group (between)	0.35 (2,210)	.96	<0.001	.06	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	0.63 (1.99,417.05)	.53	0.003	.16	N/A	N/A
QoL (psychological health)
	Mauchly test of sphericity—time	N/A	N/A	N/A	N/A	0.8 (2)	.69
	Interaction—Greenhouse-Geisser	0.23 (3.99,420.49)	.93	0.002	.10	N/A	N/A
	Main effect of group (between)	0.63 (2,211)	.53	0.006	.15	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	0.65 (1.99,420.49)	.53	0.003	.16	N/A	N/A
QoL (social relationships)
	Mauchly test of sphericity—time	N/A	N/A	N/A	N/A	11.5 (2)	.003
	Interaction—Greenhouse-Geisser	0.29 (3.80,398.68)	.87	0.003	.11	N/A	N/A
	Main effect of group (between)	0.86 (2,210)	.42	0.008	.20	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	4.57 (1.90,398.68)	.01	0.021	.76	N/A	N/A
QoL (environment)
	Mauchly test of sphericity—time	N/A	N/A	N/A	N/A	6.6 (2)	.03
	Interaction—Greenhouse-Geisser	0.27 (3.88,405.37)	.90	0.003	.11	N/A	N/A
	Main effect of group (between)	0.12 (2,209)	.89	0.001	.07	N/A	N/A
	Main effect of time (within)—Greenhouse-Geisser	7.89 (1.94,405.73)	<.001	0.036	.95	N/A	N/A

^aN/A: not applicable.

^bQoL: quality of life.