Characteristics of ASD and Non-ASD videos on YouTube.

a<p>If not explicitly stated in metadata associated with the video value was estimated based on consensus of two or more investigators.</p>b<p>The number of views on YouTube accessed on 12/10/13.</p>c<p>Number of additional people in the video excluding the child and person recording the video.</p>d<p>Videos were broadly categorized, after initial identification, to illustrate the diversity of videos evaluated.