The Evaluation of YouTubeTM English Videos? Quality About Coronary Artery Bypass Grafting

Objectives: The aim of the study was to clarify the reliability and quality of English videos about Coronary artery bypass grafting on YouTubeTM.Methods: The study was performed between July 16 and July 30. A cardiovascular surgeon searched for terms including "coronary artery disease," "coronary artery treatment," "coronary artery bypass" and "coronary artery bypass surgery," in YouTubeTM. All videos were classified into two groups according to the source who uploaded the video as professional videos and non-professional videos. Video characteristics including duration of video on YouTubeTM, length of video, and view numbers for each video were recorded. Moreover, the numbers of "comments," "likes," and "dislikes" were noted. Furthermore, the target audience of the videos (professional health care worker and patients) was analyzed, DISCERN score and Global quality score (GQS) were calculated for each video.Results: Totally, 812 videos were divided into two groups according to upload sources; 448 videos were categorized as profes-sional videos and 364 videos were categorized as non-professional videos. The mean number of views was 3220.5 for professional videos and 2216.5 for non-professional videos (p=0.001). In addition, the mean "like" numbers and mean comment numbers were significantly higher for professional videos (p=0.001 and p=0.001). The mean DISCERN score was 2.6 for professional videos and 1.5 for non-professional videos (p=0.001). Similarly, the mean GSQ was significantly higher for professional videos (3.5 vs. 2.5, p=0.001).Conclusion: YouTubeTM videos which are shared by professional healthcare workers have better quality and reliability with signifi-cantly higher DISCERN score and GQS.