Table 3: Two-way MANOVA analysis for well-being due to intervention, age, and interaction.

-	Sources	Type III sum of squares	df	Mean square	F	Significance
Autonomy	Pre-test autonomy	0.02	1	0.02	0.00	0.97
	Group	621.77	1	621.77	36.84	0.00
	Age	2.55	1	2.55	0.15	0.70
	Group × Age	4.70	1	4.70	0.28	0.60
	Error	590.71	35	16.88
	Corrected total	1328.98	39
Environmental mastery	Pre-test environmental mastery	22.00	1	22.00	1.58	0.22
	Group	1604.37	1	1604.37	115.01	0.00
	Age	229.45	1	229.45	16.45	0.00
	Group × Age	0.70	1	0.70	0.05	0.82
	Error	488.26	35	13.95	-	-
	Corrected total	2306.38	39	-	-	-
Personal growth	Pre-test personal growth	21.23	1	21.23	1.76	0.19
	Group	556.80	1	556.80	46.19	0.00
	Age	4.30	1	4.30	0.36	0.55
	Group × Age	16.49	1	16.49	1.37	0.25
	Error	421.93	35	12.06	-	-
	Corrected total	985.10	39	-	-	-
Positive relations	Pre-test positive relations	6.20	1	6.20	0.50	0.49
	Group	572.25	1	572.25	45.90	0.00
	Age	18.91	1	18.91	1.52	0.23
	Group × Age	17.52	1	17.52	1.41	0.24
	Error	436.38	35	12.47	-	-
	Corrected total	1072.00	39	-	-	-
Purpose in life	Pre-test purpose in life	5.79	1	5.79	0.46	0.50
	GROUP	725.32	1	725.32	57.54	0.00
	Age	149.71	1	149.71	11.88	0.00
	Group × Age	8.64	1	8.64	0.69	0.41
	Error	441.21	35	12.61	-	-
	Corrected total	1233.78	39	-	-	-
Self-acceptance	Pre-test self-acceptance	2.97	1	2.97	0.25	0.62
	Group	912.71	1	912.71	77.29	0.00
	Age	126.29	1	126.29	10.69	0.00
	Group × Age	3.09	1	3.09	0.26	0.61
	Error	413.32	35	11.81	-	-
	Corrected total	1390.40	39	-	-	-
Overall well-being	Pre-test overall well-being	23.13	1	23.13	0.26	0.61
	Group	28782.00	1	28782.00	321.74	0.00
	Age	2230.19	1	2230.19	24.93	0.00
	Group × Age	57.98	1	57.98	0.65	0.43
	Error	3130.99	35	89.46	-	-
	Corrected total	33651.78	39	-	-	-