Table 2. Mixed model ANOVAs to test the difference between the two groups (intervention and control) and difference within each group (pre and post) on outcome measures of cognitive function.

Variable	Pre-intervention		Post-intervention
	Intervention (n = 25)	Control (n = 25)	Intervention (n = 25)	Control (n = 25)
Perceived cognitive functioning CFQ	32.48 (7.05)	39.20 (10.12)	32.68 (8.36)	45.44 (17.35)	Test of Time x Group Interaction
					F = 3.90
					p = 0.05
					ƞp2 = 0.075
					Test of Main Effects
					Between-participant effects	Within-participant effects
					(Group)	(Time)
Sustained attention
Errors of omission	7.60 (4.53)	8.96 (4.43)	6.56 (3.35)	9.08 (4.41)	F = 3.18	F = 0.88
					p = 0.81	p = 0.35
					ƞp2 = 0.062	ƞp2 = 0.018
Correct	396.95 (55.25)	378.62 (89.99)	407.59 (35.02)	386.22 (97.92)	F = 1.01	F = 1.57
					p = 0.31	p = 0.21
					ƞp2 = 0.021	ƞp2 = 0.032
Incorrect	364.65 (54.21)	352.32 (83.83)	357.69 (80.38)	353.47 (68.22)	F = 0.21	F = 0.08
					p = 0.64	p = 0.76
					ƞp2 = 0.004	ƞp2 = 0.002
Executive Function
Stroop Interference	145.87 (203.85)	219.18 (190.20)	118.93 (125.98)	177.08 (172.71)	F = 2.17	F = 2.78
					p = 0.15	p = 0.10
					ƞp2 = 0.042	ƞp2 = 0.055
Memory
Digit forwards	7.32 (1.37)	6.68 (0.85)	7.84 (1.21)	6.81 (1.09)	F = 8.27	F = 4.58
					p<0.001**	p = 0.03*
					ƞp2 = 0.147	ƞp2 = 0.087
Digit backwards	5.56 (1.32)	5.13 (1.54)	5.21 (1.71)	4.88 (1.45)	F = 1.03	F = 1.91
					p = 0.84	p = 0.173
					ƞp2 = 0.022	ƞp2 = 0.040
Visual Spatial Skills
Block Design	36.58 (10.77)	35.52 (18.75)	34.83 (12.38)	36.26 (8.67)	F = 0.00	F = 0.76
					p = 0.95	p = 0.78
					ƞp2<0.01	ƞp2 = 0.002

M, Mean, SD, standard deviation

*p<0.05

**p<0.01.

a. Welch’s F (assumption of homogeneity of variance violated).