Table 3. Difference in mean scores (SD) of DASS-21 Stress subscale within and between groups across time.

	Baseline Mean (SD)	9th month Mean (SD)	p-value (within group)	Effect size
Group A	34.57	26.10	<0.001*	0.6 (moderate)
	(3.74)	(6.64)
Group B	34.83	32.62	<0.001*	0.2 (small)
	(2.40)	(4.83)
p-value (between groups)	0.29	<0.001*
Effect size	0.1 (small)	1.2 (large)

*statistical significance at α=0.05