An Evaluation of the Usefulness of YouTube® Videos on Crown Preparation

Table 4

Correlation between the likes/dislikes, comments, video score, and merit of 12 videos.

	Viewer/day	Like/day	Dislike/day	Positive comments/like	Negative comments/dislike	Video score	Video merit
Total views	.78 ()	.68 (0.02)	0.38 (0.23)	.65 (0.02)	-0.01 (0.98)	0.27 (0.40)	.75 (0.01)
Like	.88 ()	.81 ()	0.46 (0.13)	.77 (0.00)	0.08 (0.81)	0.33 (0.30)	.84 ()
Dislike	0.57 (0.05)	0.52 (0.08)	.95 ()	0.32 (0.31)	-0.03 (0.92)	-0.52 (0.08)	0.32 (0.32)
Positive comments	.91 ()	.85 ()	0.50 (0.10)	.84 ()	0.21 (0.52)	0.32 (0.31)	.82 ()
Negative comments	0.13 (0.70)	0.23 (0.48)	0.04 (0.90)	.59 (0.05)	1.00 ()	0.14 (0.67)	0.18 (0.58)

Correlation is significant at level 5%.; correlation is significant at level 1%.