The quality and reliability of short videos about uraemia on BiliBili and TikTok: a cross-sectional study

This study aimed to assess the quality and reliability of short videos about uraemia on BiliBili and TikTok. On June 12, 2025, we searched the top 100 videos arranged by default using the keyword "uraemia" on both platforms. We collected and analysed their characteristics, content, and uploaders. To evaluate the quality, the Global Quality Score (GQS) and the modified DISCERN tool (mDISCERN) were used. This study included 153 videos in total, with 81 from TikTok and 72 from Bilibili. Overall, the audience engagement on TikTok was significantly greater than that on Bilibili. Although the median mDISCERN and GQS scores were identical across platforms (2 [2-2] and 2 [2-3], respectively), their score distributions differed significantly (p < 0.05). Interestingly, we found that videos from self-media achieved higher GQS scores than those from doctors or official media. A weak positive correlation was found between video quality and collections and shares on Bilibili alone (p < 0.05). In conclusion, the quality and reliability of health information from uraemia videos on TikTok and Bilibili were found to be suboptimal. Concerted efforts from the public, uploaders, and social media platforms are needed to foster the dissemination of high-quality health information.