Abstract
BACKGROUND: The incidence of Non-alcoholic fatty liver disease (NAFLD) in China and USA is extremely high and rising. TikTok has become a popular channel for medical information dissemination and we aimed to evaluate the quality and reliability of NAFLD related videos on TikTok, in both its USA and Chinese versions. METHODS: We analyzed the top 100 NAFLD videos on both the USA version and Chinese version of TikTok, a total of 200 videos, from which keywords were extracted and scored using the Global Quality Scale (GQS), modified DISCERN (mDISCERN), and Medical Quality Video Evaluation Tool (MQ-VET). Exploring the relationship between video quality and audience related factors, as well as ranking, through Spearman correlation analysis. RESULTS: The mDISCERN scores of videos on the USA version of TikTok is higher than that on the Chinese version (P < 0.01), but there is no significant difference in the GQS and MQ-VET scores. The GQS, mDISCERN and MQ-VET scores of videos published by medical practitioners were significantly higher than those of non-medical practitioners (P < 0.001). However, there was no significant correlation between video quality and popularity indicators. CONCLUSION: The quality of NAFLD related short videos on TikTok is acceptable, but the reliability is mediocre, and there is still room for improvement. The videos published by USA medical practitioners are more reliable than those of Chinese medical practitioners. The most concerned topic of both countries is diet. The TikTok recommendation algorithm may limit access to high-quality health videos, and further research on other platforms and languages is necessary.