Abstract：
The consumption and sharing of information on social media contribute to the circulation of false health content. In this sense, popular belief-driven posts recommending the use of amber necklaces to prevent symptoms of teething can be easily found on social media, even when they offer health risks for children. Accordingly, this study aimed to characterize posts in Portuguese by identifying message-based factors associated with higher user interactions of Facebook. A total of 500 Facebook posts published in Portuguese between August 2016 and August 2021 were retrieved by CrowdTangle, and analyzed quantitatively according to time of publication, total user interaction, and post overperforming score, and then qualitatively by two independent investigators, according to motivation, authors\' profiles, and sentiment. The data were evaluated by descriptive analysis, Mann-Whitney U test, chi-square test, and multiple logistic regression models regarding interaction metrics. The posts were published predominantly by commercial profiles, with social, psychological, and financial motivations, and expressed positive sentiment. Furthermore, time of publication (OR=2.65), regular user profiles (OR=3.30), and neutral/negative sentiment (OR=2.76) were associated positively with total interactions, whereas only time of publication was associated with post overperforming scores (OR=1.65). In conclusion, Facebook posts promoting efficacy of amber necklaces in managing teething symptoms are primarily created by commercial profiles with vested interests in marketing the product. The key factors that contribute to the success of posts containing false information about amber necklaces on Facebook can be identified by considering the author\'s profile, sentiment, and time of publication.
摘要：
社交媒体上的信息消费和共享有助于传播虚假健康内容。在这个意义上,在社交媒体上很容易找到流行的信念驱动的帖子，建议使用琥珀色项链来防止出牙症状，即使他们为儿童带来健康风险。因此，这项研究旨在通过识别与Facebook较高用户交互相关的基于消息的因素来表征葡萄牙语的帖子.CrowdTangle检索了2016年8月至2021年8月以葡萄牙语发布的500个Facebook帖子，并根据发布时间进行定量分析，总的用户交互，并发布表现优异的分数，然后由两名独立调查人员定性，根据动机，作者简介，和情绪。通过描述性分析对数据进行评估，Mann-WhitneyU测试,卡方检验,以及关于交互指标的多元逻辑回归模型。这些帖子主要是通过商业资料发布的，社会,心理,和财务动机，并表达了积极的情绪。此外，发布时间（OR=2.65），常规用户配置文件(OR=3.30)，中性/负面情绪(OR=2.76)与总互动呈正相关，而只有发表时间与表现过度后评分相关(OR=1.65).总之,Facebook帖子宣传琥珀色项链在管理出牙症状方面的功效，主要是由在营销该产品时具有既得利益的商业档案创建的。通过考虑作者的个人资料，可以确定导致Facebook上包含琥珀色项链虚假信息的帖子成功的关键因素，情绪,和出版时间。
