Correlation of the DISCERN score and video metrics, video source
and video type:
For the 90 YouTube videos found, the mean views were 55292.4, mean likes
270.7, mean dislikes 21.5 and mean duration of video 11.9 minutes.
A Pearson’s product-moment correlation was run to assess the
relationship between the total DISCERN score and video metrics (views,
likes, dislikes and video length in minutes). A higher number of
dislikes was correlated with a lower DISCERN score, r(98) = -0.24 [p =
0.02]. There was no statistically significant correlation found
between the DISCERN score and the video views, likes or
length.
A one-way Welch ANOVA was conducted to determine if DISCERN total score
was different for groups with different video types or video sources
(see Table 4). Mean DISCERN scores were not statistically significantly
different between classified different video sources, however,
Games-Howell post hoc analysis revealed that the mean increase in
DISCERN scores from unclassified to academic sources (15.85, 95% CI
[3.36, 28.34]) was statistically significant (p = -.006). A one-way
Welch ANOVA showed there was no significant differences between the mean
DISCERN scores amongst the different video types.
Correlation of the essential criteria scores and video metrics,
sources and types :
A Spearman’s rank-order correlation was run to assess the relationship
between the EIVC criteria score and video metrics (views, likes,
dislikes and video length in minutes). A higher number of dislikes was
correlated with a lower essential criteria score, rs(98)
= -0.217, p =0.04. There was no correlation with the video views, likes
or video length with the EIVC scores.
A one-way Welch ANOVA was conducted to determine if the EIVC scores were
different amongst the video source and video type groups. There was no
statistically significant differences between the EIVC scores amongst
the groups of video sources however, it was found that patient education
type videos were scored significantly higher than intra-operative type
videos (p=0.003).