Accepted for/Published in: JMIR Cancer
Date Submitted: Apr 13, 2024
Open Peer Review Period: Apr 12, 2024 - Jun 7, 2024
Date Accepted: Jan 27, 2025
(closed for review but you can still tweet)
Evaluation of Douyin short videos on mammography in China: Quality and reliability analysis
ABSTRACT
Background:
Breast cancer is the most common malignant tumor and the fifth leading cause of cancer death worldwide, and it exerts a huge disease burden on China. Mammography is one of the most effective methods for breast cancer screening, especially for early breast cancer diagnosis. Douyin has gained popularity as a social media platform for sharing health information; however, the quality and reliability of mammography-related video content remains unexplored.
Objective:
This study was performed to investigate the information quality and reliability of mammography videos on Douyin.
Methods:
In October 2023, a Douyin search was performed using the keywords “钼靶” (“mammography” in Chinese) and “钼靶检查” (“mammography screening” in Chinese), we retrieved and screened 200 videos from Douyin and collected a sample of 136 mammography-related videos in Chinese for data extraction. We extracted the basic video information, coded the content, and identified the video sources. The comprehensiveness of the video content was evaluated using seven categories covering conception, examination process, applicable objects, precautions, combined other examinations, advantage, and report. Completeness was evaluated with a checklist developed by the researchers. The reliability and quality of the videos were assessed using two standardized evaluation instruments: the modified DISCERN (mDISCERN) tool and the Global Quality Scale (GQS). Additionally, the correlation between video quality and video characteristics was investigated.
Results:
Among the video sources, 82.4% (112/136) were attributed to health professionals and 17.6% (24/136) were attributed to non-professionals. Among health professionals, only one is a radiologist. Overall, 77.2% (105/136) videos had useful information about mammography. Among the useful videos, the advantages of mammography were the most frequently covered topic (53/105, 50.5%). Median values for the mDISCERN and GQS evaluations across all videos stood at 2.5 (IQR 1.63-3), and 2 (IQR 1-2), respectively. The mDISCERN and GQS scores of the videos in the useful and professional groups were significantly higher than those in the unhelpful and non-professional groups (all P < .001). Correlation analysis showed that the number of likes, comments, and saves had a weak negative correlation with both the mDISCERN and GQS scores.
Conclusions:
The overall information quality of mammography videos on Douyin is unsatisfactory, and the videos are mainly uploaded by clinicians. Radiologists should be encouraged to provide useful and accurate videos and to instruct patients appropriately. As Douyin continues to grow as a platform for health information, it is essential to ensure stricter video publishing standards and procedures to improve the quality of medical content. Clinical Trial: None
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