Abstract

Objective
The aim of the present study was to assess the quality, reliability and educational value of health-related information videos about lateral epicondylitis on YouTube.
Metods
The study conducted a search on YouTube on April 1, 2021 using the search term "lateral epicondylitis". Based on relevance to this keyword, the first 50 videos were recorded for assessment. The videos were assessed by two orthopedic surgeons. Video length in seconds, view counts, number of likes, number of dislikes, video category (animation or not), video content, days since upload, and source of upload (uploader) were recorded. All videos were analyzed for length, view counts, number of likes and source of upload. Quality of the videos was assessed using the Global Quality score (GQS) (score range: 0–4), Journal of the American Medical Association (JAMA) score (0–5), and DISCERN (15-75) score. The data were statistically analyzed according to these scoring systems.
Results
Like ratio had no significant correlation with GQS, DISCERN, and JAMA scores. There was a significant positive correlation between view ratio and GQS scores (p = 0.038). View ratio had no significant correlation with DISCERN (p = 0.453) and JAMA scores (p = 0.946). There was a significant positive correlation between Video power index and GQS scores (p = 0.036). Video power index had no significant correlation with DISCERN (p = 0.442) and JAMA scores (p = 0.938). According to the source of upload, there was a significant difference in JAMA and DISCERN scores between physicians and non-physicians. GQS did not significantly differ (p = 0.15) according to the source of upload.
Conclusion
The analysis of the first 50 videos relevant to lateral epicondylitis on YouTube revealed that videos were uploaded mainly by healthcare professionals. Overall, the 50 videos had an average level of adequacy.

Key words: Social Media, Lateral Epicondylitis, Youtube