Christos Livas|Konstantina Delli|Nikolaos Pandis
“My Invisalign experience”: content, metrics and comment sentiment analysis of the most popular patient testimonials on YouTube
Academic Center for Dentistry Amsterdam|University of Amsterdam|University Medical Center Groningen|University of Groningen|University of Bern
aim study investigate popularity content invisalign patient testimonials youtube well sentiment related comments using term invisalign experience top 100 results youtube view count screened english spoken patient videos attracted comments video information time since video upload sponsorship engagement metrics comments likes dislikes subscriptions views collected videos rated information completeness ics comments classified origin content emotional loading comments measured using automated sentiment analysis 40 reviewed testimonials scored average ics 378 sd 097 ics time since upload video duration appear significantly influence number views subscriptions likes dislikes comments statistically significant difference p 003 mean positive 201 sd 095 negative sentiment scores 190 sd 114 commenters status overall comment video significantly associated positive sentiment scores significant association sponsorship commenters status overall comment video focus concern perceived invisaligns disadvantages increased negative sentiment scores engagement audience views popular invisalign patient testimonials significantly influenced completeness information video duration lifespan sentiment viewers comments invisalign treatment significantly positive significantly associated status content sponsorship videos orthodontic trends youtube need cautiously monitored planning interventions improve patients knowledge orthodontics