Video Quality Assessment and Analysis of Gastroesophageal Reflux Disease on TikTok and Bilibili: Cross-Sectional Study

To assess the content quality and reliability of Gastroesophageal reflux disease (GERD) videos on TikTok and Bilibili. Since many people with GERD use current online platforms to search for health information, there is a need to assess the quality of GERD videos on social media. There are many GERD videos on TikTok and Bilibili; however, the quality of information in these videos remains unknown. A cross-sectional survey on two video platforms. In November 2023, we retrieved 200 videos from TikTok and Bilibili with the search term "GERD." Basic video information was extracted, the content coded, and the video source identified. Two independent raters assessed the quality of each video using the Journal of the American Medical Association (JAMA) benchmark criteria, the modified DISCERN (mDISCERN) criteria, and the Global Quality Score (GQS) tool. A total of 156 videos were collected. Most of the videos on TikTok and Bilibili came from gastroenterologists. TikTok's GERD video quality and reliability were higher than Bilibili's. The mDISCERN and GQS scores of both platforms were positively correlated with duration, and the GQS score was positively correlated with collection and shares. Bilibili's JAMA score was negatively correlated with time-sync comments, and TikTok's JAMA score was negatively correlated with days since upload. This study indicated that the content quality scores of TikTok and Bilibili as sources of scientific information on GERD are average, and patients should carefully identify and select to watch GERD-related videos on TikTok and Bilibili. By evaluating the quality of videos on GERD on the two platforms, this can provide new ideas for health education interventions in the clinic and a relevant basis for improving the quality level of the videos.