[Retracted] Can Swimming Teaching Prevent Drowning? An Experimental Study of Children in China

Table 2

Time and group interaction simple effect test results (t-value).

Group interaction	Knowledge		Skill		Attitude		Behavior
	Before	After	Before	After	Before	After	Before	After
Comparison between control group and swimming group	−0.163	−0.987	−0.147	−3.397	0.068	−0.970	0.066	−1.293
Comparison between control group and teaching group	0.157	−3.671	0.055	−4.704	−0.213	2.852	0.021	2.565
Comparison between swimming group and teaching group	0.272	−2.699	0.212	−0.954	−0.294	3.852	−0.045	4.308

The difference is statistically significant ().