Table 3. Impact of the programme comparing the experimental group and the control group.

		Experimental group	Control group	Cohen’s d a [95% CI] b	ANOVA		ANCOVA
		M(SD)	M(SD)		F	p	F	p	η2p c
AT	T1	24.18(5.99)	23.73(6.23)	0.07[-1.02, 1.17]	0.28	.597
	T2	23.67(7.27)	22.53(7.00)	0.16[-1.17, 1.49]			0.35	.557	.01
CL	T1	24.82(6.56)	24.78(6.17)	0.01[-1.11, 1.13]	0.05	.822
	T2	26.55(7.32)	24.91(6.57)	0.24[-1.04, 1.52]			1.57	.214	.02
RE	T1	27.32(7.24)	27.06(6.66)	0.04[-1.18, 1.26]	0.04	.835
	T2	27.67(8.07)	26.74(6.11)	0.14[-1.13, 1.41]			0.20	.653	.01
SE	T1	30.03(5.88)	31.52(5.15)	-0.28[-1.24, 0.68]	1.79	.184
	T2	31.03(6.82)	28.44(5.02)	0.47[-0.62, 1.55]			11.22	.001	.12
AB	T1	7.24(9.05)	8.35(6.67)	-0.15[-1.47, 1.17]	0.57	.453
	T2	8.85(9.83)	7.16(8.15)	0.20[-1.44, 1.83]			5.50	.021	.06
ES	T1	3.76(2.26)	3.38(2.22)	0.17[-0.23, 0.57]	0.76	.386
	T2	3.26(2.22)	4.49(2.61)	-0.50[-0.94, -0.05]			14.25	.000	.15
BP	T1	2.06(1.78)	2.14(1.62)	-0.05[-0.35, 0.25]	0.07	.793
	T2	2.61(2.04)	3.16(2.36)	-0.25[-0.68, 0.19]			4.36	.040	.05
PP	T1	1.97(1.79)	1.41(1.57)	0.35[0.05, 0.64]	2.74	.101
	T2	2.29(2.05)	2.76(2.22)	-0.22[-0.63, 0.20]			2.22	.140	.03
HY	T1	4.12(2.29)	4.16(2.38)	-0.02[-0.44, 0.41]	0.03	.867
	T2	3.84(1.98)	4.49(2.16)	-0.31[-0.71, 0.09]			4.92	.029	.06
PB	T1	8.21(1.71)	8.33(1.36)	-0.08[-0.37, 0.22]	0.12	.733
	T2	7.97(1.80)	7.66(1.94)	0.17[-0.20, 0.53]			0.19	.669	.01

AT, attention; CL, clarity; RE, repair; SE, self-esteem; AB, affect balance; ES, emotional symptoms; BP, behavioural problems; PP, peer problems; HY, hyperactivity; PB, prosocial behaviour.

^aEffect size

^bCI = confidence interval.

^cPartial eta squared.