Get Social: Randomized Trial of a Social Network Delivered Lifestyle Intervention

 描述（由申请人提供）：生活方式干预措施已经确立了十多年的疗效，但仍然没有广泛传播，主要是由于高成本以及患者和提供者的负担。在线社交网络是提供生活方式咨询的另一种方式，通过这种方式提供咨询几乎可以消除患者就诊，而患者就诊是传统方式中成本和负担的主要来源。在线社交网络中的交互是频繁的、简短的和异步的，因为用户在工作和休闲时间期间的停机期间或者当他们仅仅感到需要社交连接时登录到他们的在线社区。因此，社交媒体已经融入人们的日常生活。通过使用它们，我们有办法将健康行为改变方案嵌入人们的日常生活中。到目前为止，在文献中，现有的在线社交网络已被用作基于网络或移动的应用程序的生活方式干预的组成部分，但不是作为干预交付的主要模式。本研究的目的是比较完全通过私人团体在网上社交网络Twitter上提供的生活方式干预传统的基于个人群体的生活方式干预。我们使用Twitter和Facebook对社交网络提供的干预进行了三项试点研究，发现这种方法既可行又可接受。使用随机试验（N=328），我们将测试通过在线社交网络提供的生活方式干预是否 (Get社会条件）将导致12个月时的平均体重减轻百分比，其不会明显差于金标准的基于人群的生活方式干预（传统条件），即，社交网络组的平均减肥不会比面对面组少2%。次要非劣效性结果包括18个月时的体重减轻，以及12个月和18个月时的饮食摄入和体力活动。我们还假设Get Social条件比Traditional条件更便宜。为了了解在线社交网络模式最适合谁，我们将在Get中测试减肥的预测因素。 社交条件包括参与度、年龄、社交能力、神经质、开放性以及智能手机和社交网络的使用。我们假设，那些更年轻，更善于社交，更多地参与社交网络，神经质/开放性更高，以及整体智能手机和社交网络用户更重的人将在社交条件下减轻更多体重。这项研究的结果可能支持一种更有利于工作场所、健康计划和诊所等为大量人口服务但空间、人员配备有限的环境的干预提供模式， 以及传统的亲自干预的资源。如果这个有效性试验是成功的，我们计划在工作场所进行有效性试验，以建立在我们以前的工作场所干预措施的基础上。

 DESCRIPTION (provided by applicant): Lifestyle interventions have had established efficacy for over a decade but are still not widely disseminated, largely due to high cost and patient and provider burden. Online social networks are an alternative way to deliver lifestyle counseling and delivery via this modality may virtually eliminate patient visits, the main source of cost and burden in traditional modalities. Interactions in online social networks are frequent, brief, and asynchronous because users login to their online communities during downtime during work and leisure time, or when they simply feel a need for social connection. As such, social media becomes embedded into people's daily lives. By using them we have a means to embed health behavior change programming into people's daily lives. Thus far in the literature, existing online social networks have been used as component of web- or mobile app-based lifestyle interventions but not as the primary modality for intervention delivery. The purpose of the present study is to compare a lifestyle intervention delivered entirely via private groups on the online social network Twitter to a traditional in-person group-based lifestyle intervention. We performed three pilot studies of social network-delivered interventions using Twitter and Facebook and found that this approach was both feasible and acceptable. Using a randomized trial (N=328), we will test whether a lifestyle intervention delivered via an online social network (Get Social condition) will result in a mean percent weight loss at 12 months that is not appreciably worse than the gold-standard in-person group-based lifestyle intervention (Traditional condition), i.e., the social network arm will not lose on average 2 percent less than the in-person arm. Secondary non-inferiority outcomes include weight loss at 18 months, and dietary intake and physical activity at 12- and 18-months. We also hypothesize that the Get Social condition will be less expensive than the Traditional condition. To understand for whom an online social network modality is most suited, we will test predictors of weight loss in the Get Social condition including engagement, age, sociability, neuroticism, openness, and smartphone and social network use. We hypothesize that people who are younger, more sociable, engage more on the social network, higher in neuroticism/openness, and heavier overall smartphone and social network users will lose more weight in the Get Social condition. Findings from this study may support an intervention delivery modality that is more conducive to settings like worksites, health plans, and clinics that serve large populations but have limited space, staffing, and resources for traditional in person interventions. If this efficacy trial is successful, we pla an effectiveness trial in a worksite setting to build upon our previous worksite interventions.