Current state of online medical service and information
With the development and advancement of the internet, telemedicine and online consultation have currently been widely accepted and have received good social feedback [19]. In 2016, around 48% emergency departments in the United States received telemedicine services, effectively improving the efficiency of emergency treatment of stroke/neurology, psychiatry, and paediatrics[20]. One study suggested that the widely use of telemedicine is potentially associated with considerable beneficial effects on health care utilization, treatment adherence, and self-management or self-efficacy [21]. In 2020, more than 90% of the tertiary hospitals in mainland China carried out telemedicine services in business-to-business mode[22]. Moreover, the Internet has become an important way for patients and general public to obtain disease-related and treatment-related information because it can be accessed conveniently and always free of charge[23]. In Hong Kong, China, 87.44% of primary care patients had used the internet to find health information, and 65.97% searched once monthly or more [10]. In western and rural China, where health resources are most scarce, Patients' and doctors' perceptions, needs, expectations, and concerns have gradually been recognized and considered to promote the development of e-health in these underprivileged regions [24][25].
By December 2022, the number of users of video-sharing platforms in China has exceeded 1 billion [19]. Video-sharing platforms, including Tiktok, Bilibili, and Weibo, have become increasingly popular and essential channels for health information dissemination for Chinese people, with user-friendly experiences on computers and smart mobile phones [26]. As one of the most popular video-sharing platforms in mainland China, TikTok Chinese web version, has more than 500 million daily users in China [27]. In 2022, more than 35000 certified doctors uploaded about 4.43 million popular science videos on TikTok [28]. However, most medical information on video-sharing platforms was not undergone professional evaluation or peer review, raising questions about their credibility and professionalism [29]. Misinformation spread online may adversely affect the patient-physician relationship by eroding trust. Therefore, more scholarly attention and regulation are needed to achieve the expected quality of online medical information on video-sharing platforms.
Major finding
We retrieved totally 10143 results from three video-sharing platforms. All videos included were open and free to public. The total number of videos on Bilibili (n = 6154) far exceeded that of the other two platforms (1884 videos on Toutiao, 2105 videos on TikTok). Current research suggested that websites on the first search results page receive almost 95% of web traffic, leaving only 5% for remaining search results pages [30]. Our results confirmed the importance of the first-page results after retrieval. In this study, the proportion of certified orthopedic physicians (36.0%) and senior professional titles (29.6%) on first 25 results were pretty unsatisfactory. One study showed that the low-quality content could be easily accessible on TikTok [31]. In this study, compared with the other two platforms, TikTok has a significantly higher proportion of certified orthopedic physicians (77.6%) and senior professional titles (69.2%), which may be attributed to the audit mechanism of TikTok, only allowing certified doctors to upload professional medical videos [32]. Some study argued that the low proportion of certified orthopedic surgeons could result in insufficient professional quality, even increasing the risk of erroneous or misleading information [34]. According to our results, while the “good” (18.7%) and “excellent” (3.5%) DISCERN classification only account for a small portion of all searched results, the DISCERN scores and JAMA scores also had no significant correlation with the type of video uploaders. However, sufficient certified orthopedic surgeons can provide in-time online feedback on professional questions from patients and general public. Meanwhile, the identity of certified orthopedic surgeons, especially senior professional titles, can guide patients to correctly choose hospitals and departments [33]. Orthopedic surgeons should not only actively participate in creating popular science and profession-related videos, but also make effort to improve the quality of online videos.
The ranking algorithm of video-sharing platforms not only considers the quality of the videos, but also more considers the likes, comments, reposts, and completion rates [35]. Video content of current platforms is mostly entertainment oriented. However, for medical videos, accuracy and professionalism are more important than entertainment and popularity. In this study, the content of professional knowledge of the first 25 results accounts for 47.9% (n = 359). When separately assessed, the proportion of professional information on bilibili (21.2%, n = 53) and Toutiao (32%, n = 80) were significantly lower than TikTok (90.4%, n = 226). Those individuals and institutions releasing professional medical videos on TikTok needs to be certified. When video-sharing platform users follow a certain creators, the platform will prioritize commending the new content released by followed creators. Meanwhile, some studies showed that videos released by medical specialists and institutions did not receive more public attention and higher quality evaluation rates than those from other sources [36], which dampened the doctor's enthusiasm of creating and uploading. Perhaps those platforms should prioritize the recommendation of videos uploaded by certified doctors when the searched term is found to be medical related.
Some studies suggested that medical students could learn professional knowledge on video-sharing platforms [37][38]. However, based on our results, the proportion of certified orthopedic doctors and professional knowledge on current video-sharing platforms were pretty low. Moreover, when considering the broad-based disease-related content, the information of professional medical knowledge were insufficient and uneven. The content on diagnosis (Toutiao: 13.6%, bilibili: 7.2%, TikTok: 50.8%) and treatment (Toutiao: 8.8%, bilibili: 8.8%, TikTok: 51.2%) accounted for a large proportion, while the content on imaging (Toutiao: 6.4%, bilibili: 3.6%, TikTok: 10.0%) and surgical technique (Toutiao: 0.8%, bilibili: 0.4%, TikTok: 7.6%) was very limited. Those content is essential for the education of orthopedic surgeons. In our opinion, the professional orthopedic knowledge and information on current video-sharing platforms is still far from comparable to professional books and literature. We do not recommend medical students learn professional orthopedic knowledge through video-sharing platforms.
Based on our results, we suggest that compared with Toutiao and bilibili, the medical videos on TikTok may have acceptably higher quality and accuracy. In 2022, Bilibili had 90.3 million daily active users and an average of 3.9 billion daily video views [39][40]. As of June 2022, Toutiao has approximately 344 million monthly users. Meanwhile, As a news platform, users of Toutiao are more inclined to read articles and textual news reading textual news instead of watching medical videos. Compared with those two platforms, TikTok has a higher proportion of certified orthopedic surgeons, senior professional titles, and proportion of professional videos. The user size of live streaming in China had reached 716 million in 2022, accounting for 68.1% of all Internet users [41]. As one of the most popular and populous live stream platforms, TikTok allows orthopedic surgeons and medical specialties to directly interact with patients and general public. This function has also greatly promoted the popularity of medical science popularization on this platform.
LIMITATION
There are several limitations to this investigation. First, there are many types of orthopedic diseases, and this study only includes 10 common spinal diseases, and a more comprehensive search is necessary for the future; second, we only analyzed the disease-related content of the video, and a more detailed analysis of the video content is needed; third, different users could have different search results due to their different daily preference. Therefore, there will be a need for larger sample sizes and more researchers to participate in the future.