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Background Diabetes has become one of the most prevalent chronic diseases, and many people living with diabetes use social media to seek health information. Recently, an emerging social media app, TikTok, has received much interest owing to its popularity among general health consumers. We notice that there are many videos about diabetes on TikTok. However, it remains unclear whether the information in these videos is of satisfactory quality. Objective This study aimed to assess the quality of the information in diabetes-related videos on TikTok. Methods We collected a sample of 199 diabetes-related videos in Chinese. The basic information presented in the videos was coded and analyzed. First, we identified the source of each video. Next, 2 independent raters assessed each video in terms of the completeness of six types of content (the definition of the disease, symptoms, risk factors, evaluation, management, and outcomes). Then, the 2 raters independently assessed the quality of information in the videos, using the DISCERN instrument. Results In regard to the sources of the videos, we found 6 distinct types of uploaders; these included 3 kinds of individual users (ie, health professionals, general users, and science communicators) and 3 types of organizational users (ie, news agencies, nonprofit organizations, and for-profit organizations). Regarding content, our results show that the videos were primarily about diabetes management and contained limited information on the definition of the disease, symptoms, risk factors, evaluation, and outcomes. The overall quality of the videos was acceptable, on average, although the quality of the information varied, depending on the sources. The videos created by nonprofit organizations had the highest information quality, while the videos contributed by for-profit organizations had the lowest information quality. Conclusions Although the overall quality of the information in the diabetes videos on TikTok is acceptable, TikTok might not fully meet the health information needs of patients with diabetes, and they should exercise caution when using TikTok as a source of diabetes-related information.

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PurposeThe purpose of this paper is to theoretically develop the concept of perceived affordance based on the existing studies, and to construct a conceptual framework to show how perceived affordances can facilitate the interaction design of social media.Design/methodology/approachThe paper provides a review of the relevant literature on affordance and perceived affordance, and conceptually proposes a typology of perceived affordances in social media and an integrative framework for interaction design from sociomateriality perspective. Furthermore, a brief empirical example on the interaction design of crowdsourcing systems is used to ground and illustrate the authors' conceptual framework.FindingsThe paper shows that the perceived affordances may have multi‐facet characteristics and the interaction design of social media should reflect the multi‐dimensional perceived affordances. The perceived affordances can support or facilitate the design of basic elements of social media, such as content and form, to enhance both usability (human‐computer interaction) and sociability (human‐human interaction). A position of constitutive entanglement does not privilege either users or social media artifacts, nor does it provide a rigid triangle among these three components. Instead, the perceived affordances play a critical role in integrating the key components in social media interaction design as an ensemble.Originality/valueThe paper attempts to explore and develop the concept of perceived affordance and employ it as a theoretical lens to underpin interaction design of social media. Overall, the authors' study contributes to the design science literature in the information management field by elaborating a new theoretical perspective and providing a conceptual framework for the researchers and designers.

Background Chronic obstructive pulmonary disease (COPD) has become one of the most critical public health problems worldwide. Because many COPD patients are using video-based social media to search for health information, there is an urgent need to assess the information quality of COPD videos on social media. Recently, the short-video app TikTok has demonstrated huge potential in disseminating health information and there are currently many COPD videos available on TikTok; however, the information quality of these videos remains unknown. Objective The aim of this study was to investigate the information quality of COPD videos on TikTok. Methods In December 2020, we retrieved and screened 300 videos from TikTok and collected a sample of 199 COPD-related videos in Chinese for data extraction. We extracted the basic video information, coded the content, and identified the video sources. Two independent raters assessed the information quality of each video using the DISCERN instrument. Results COPD videos on TikTok came mainly from two types of sources: individual users (n=168) and organizational users (n=31). The individual users included health professionals, individual science communicators, and general TikTok users, whereas the organizational users consisted of for-profit organizations, nonprofit organizations, and news agencies. For the 199 videos, the mean scores of the DISCERN items ranged from 3.42 to 4.46, with a total mean score of 3.75. Publication reliability (P=.04) and overall quality (P=.02) showed significant differences across the six types of sources, whereas the quality of treatment choices showed only a marginally significant difference (P=.053) across the different sources. Conclusions The overall information quality of COPD videos on TikTok is satisfactory, although the quality varies across different sources and according to specific quality dimensions. Patients should be selective and cautious when watching COPD videos on TikTok.