TY - JOUR AU - Joseph-Williams, Natalie AU - Evans, Rhodri AU - Edwards, Adrian AU - Newcombe, Robert G AU - Wright, Patricia AU - Grol, Richard AU - Elwyn, Glyn PY - 2010 DA - 2010/05/26 TI -支持20分钟在线知情决策:一个PSA测试决策辅助的观察性web日志研究JO - J Med Internet Res SP - e15 VL - 12 IS - 2 KW -决策辅助KW -知情决策制定KW -互联网KW -前列腺癌KW -前列腺特异性抗原(PSA)测试KW -用户跟踪KW - web日志KW -网站交易日志文件AB -背景:基于web的决策辅助已知对知识、态度和行为有影响;知情决策的重要组成部分。我们知道决策辅助在随机对照试验(rct)中达到了什么效果，但我们仍然对如何使用它们以及这与知情决策结果测量之间的关系知之甚少。目的:通过网站交易日志文件(web-logs)检查男性对前列腺癌筛查在线决策辅助工具的使用情况，并检查使用情况与知情决策组成部分之间的关系。方法:我们对在线决策辅助工具prodex的用户进行了观察性的网络日志分析。从英国南威尔士的26个全科诊所招募了年龄在50至75岁之间的男性进行相关的随机对照试验。被分配到随机对照试验一个组的男性被纳入目前的研究。时间和使用数据来自网站日志文件。知情决策的组成部分是通过在线问卷来衡量的。 Results: Available for analysis were 82 web-logs. Overall, there was large variation in the use of Prosdex. The mean total time spent on the site was 20 minutes. The mean number of pages accessed was 32 (SD 21) out of a possible 60 pages. Significant associations were found between increased usage and increased knowledge (Spearman rank correlation [ρ] = 0.69, P < .01), between increased usage and less favorable attitude towards PSA testing (ρ = -0.52, P < .01), and between increased usage and reduced intention to undergo PSA testing (ρ = -0.44, P < .01). A bimodal distribution identified two types of user: low access and high access users. Conclusions: Increased usage of Prosdex leads to more informed decision making, the key aim of the UK Prostate Cancer Risk Management Programme. However, developers realistically have roughly 20 minutes to provide useful information that will support informed decision making when the patient uses a web-based interface. Future decision aids need to be developed with this limitation in mind. We recommend that web-log analysis should be an integral part of online decision aid development and analysis. Trial Registration: ISRCTN48473735; http://www.controlled-trials.com/ISRCTN48473735 (Archived by WebCite at http://www.webcitation.org/5pqeF89tS) SN - 1438-8871 UR - //www.mybigtv.com/2010/2/e15/ UR - https://doi.org/10.2196/jmir.1307 UR - http://www.ncbi.nlm.nih.gov/pubmed/20507844 DO - 10.2196/jmir.1307 ID - info:doi/10.2196/jmir.1307 ER -