Table 4.

Comparison of the content of the videos (N=100).

Variable	Value, median (range)			P value
	Directly related (n=47)	Indirectly related (n=53)
Views, n	1,616,358 (311,534-31,326,580)	960,159 (253,267-17,553,197)	.23
Video length (minutes)	5.62 (0.25-32.35)	5.83 (0.95-34.82)	<.99
Time on YouTube (days)	2247 (266-5044)	1298 (39-3821)	.02
Comments, n	242 (0-5127)	149 (0-3586)	.78
Likes (thumbs up), n	4514 (65-77,164)	5217 (195-58,550)	.60
Dislikes (thumbs down), n	762 (14-13,534)	434 (11-12,521)	.27
Like ratio	85 (62-98)	91 (60-99)	.003
View ratio	768 (124-19,265)	786 (101-73,366)	<.99
Video power index	633 (116-18,128)	730 (95-66,857)	.60
Score	7 (1-16)	5 (2-11)	<.001