Table 2.

Accurate percentage of depth and rate among the interventions

	ANOVA p value
	Depth accuracy	Rate accuracy
Group	0.48	0.06
Feedback	0.0003*	0.68
Shoulder pad	0.41	0.59
Group×feedback	0.40	0.99
Group×shoulder pad	0.86	0.99
Feedback×shoulder pad	0.25	0.21

Multiway ANOVA.

* p<0.05 significant.

ANOVA, analysis of variance.