The effect of a virtual educational intervention based on self-efficacy theory on women’s skills of breast self- examination

Table 2 Comparison of the mean scores of the study variables in the intervention and control groups

Variable	Groups	Before intervention	After intervention	P	Mean change	ANCOVA		Effect size (Cohen’s d)
Variable	Groups	Before intervention	After intervention	P	Mean change	P	*η2p*	Effect size (Cohen’s d)
Knowledge	Intervention	4.91 ± 2.92	6.84 ± 2.38	0.001	1.57 ± 3.09	0.362	0.011	0.11
Knowledge	Control	5.05 ± 2.89	6.30 ± 1.82	0.002	1.23 ± 2.76
P		0.793	0.168	-	0.575
Self-efficacy	Intervention	25.55 ± 8.83	30.43 ± 9.79	< 0.001	5.39 ± 6.91	0.012	0.052	0.40
Self-efficacy	Control	24.42 ± 9.26	25.50 ± 9.79	0.025	2.38 ± 7.98
P		0.456	0.006	-	0.027
BSE skills	Intervention	3.88 ± 5.64	12.90 ± 7.54	< 0.001	8.87 ± 7.07	< 0.001	0.209	0.87
BSE skills	Control	3.93 ± 5.89	6.86 ± 6.80	0.001	2.88 ± 6.64
P		0.961	< 0.001	-	< 0.001

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