Serviço de Cardiologia, Hospital Professor Doutor Fernando Fonseca, Lisboa, Portugal.
Serviço de Medicina III, Hospital Professor Doutor Fernando Fonseca, Lisboa, Portugal.
Rev Port Cardiol (Engl Ed). 2021 Nov;40(11):815-825. doi: 10.1016/j.repce.2021.10.001. Epub 2021 Nov 17.
The Internet is a fundamental aspect of health information. However, the absence of quality control encourages misinformation. We aim to assess the relevance and quality of acute myocardial infarction videos shared on YouTube (www.youtube.com) in Portuguese.
We analyzed 1,000 videos corresponding to the first 100 search results on YouTube using the following terms (in Portuguese): "cardiac + arrest"; "heart + attack"; "heart + thrombosis"; "coronary + thrombosis"; "infarction - brain", "myocardial + infarction" and "acute + myocardial + infarction". Irrelevant (n=316), duplicated (n=345), without audio (n=24) or non-Portuguese (n=106) videos were excluded. Included videos were assessed according to source, topic, target audience and scientific inaccuracies. Quality of information was assessed using The Health on the Net Code (HONCode from 0 to 8) and DISCERN (from 0 to 5) scores - the higher the score, the better the quality.
242 videos were included. The majority were from independent instructors (n=95, 39.0%) and were addressed to the general population (n=202, 83.5%). One third of the videos (n=79) contained inaccuracies while scientific society and governmental/health institution videos had no inaccuracies. The mean video quality was poor or moderate; only one video was good quality without any inaccuracies. Governmental/health institutions were the source with the best quality videos (HONCode 4±1, DISCERN 2±1).
One third of the videos had irrelevant information and one third of the relevant ones contained inaccuracies. The average video quality was poor; therefore it is important to define strategies to improve the quality of online health information.
互联网是健康信息的一个基本方面。然而，由于缺乏质量控制，错误信息得以传播。我们旨在评估在 YouTube（www.youtube.com）上分享的葡萄牙语急性心肌梗死视频的相关性和质量。
我们使用以下术语（葡萄牙语）分析了 YouTube 上前 100 个搜索结果中的 1000 个视频：“cardiac + arrest”；“heart + attack”；“heart + thrombosis”；“coronary + thrombosis”；“infarction - brain”；“myocardial + infarction”和“acute + myocardial + infarction”。不相关的（n=316）、重复的（n=345）、没有音频的（n=24）或非葡萄牙语的（n=106）视频被排除在外。评估入选视频的来源、主题、目标受众和科学错误。使用互联网医疗保健可信度（HONCode 0-8 分）和 DISCERN（0-5 分）评分评估信息质量——得分越高，质量越好。
242 个视频被纳入。其中大部分来自独立讲师（n=95，39.0%），面向大众（n=202，83.5%）。三分之一的视频（n=79）存在错误，而科学协会和政府/卫生机构的视频则没有错误。平均视频质量较差或中等；只有一个视频质量良好，没有任何错误。政府/卫生机构是视频质量最好的来源（HONCode 4±1，DISCERN 2±1）。
三分之一的视频内容不相关，三分之一的相关视频内容存在错误。平均视频质量较差；因此，制定策略提高在线健康信息的质量非常重要。
