TY - JOUR AU - Neve, Melinda J AU - Collins, Clare E AU - Morgan, Philip J PY - 2010 DA - 2010/12/14 TI -退出，不使用损耗，以及商业基于web的减肥计划中不使用损耗的预处理预测器JO - J医疗互联网Res SP - e69 VL - 12 IS - 4kw -减肥KW -互联网KW -商业部门KW -保留AB -背景:了解预测留存率和网站使用的因素对于开发有效的基于网络的减肥干预措施至关重要。然而，低留存率(退出流失)和网站使用率(不使用流失)是网络项目有效性的主要抑制因素。目的:该研究旨在(1)描述退出和不使用减员的患病率，(2)检查基于网络的商业减肥计划参与者队列中不使用减员的预处理预测因素。方法:参与者从2007年8月15日到2008年5月31日参加了澳大利亚最大的减肥者俱乐部的在线项目。这项研究只包括那些订阅了12周或52周的人。所有数据均由项目所有者SP Health Co Pty Ltd(悉尼，澳大利亚)收集，并以“未识别”形式提供。收集的数据包括对预处理调查(社会人口学和行为特征)、订阅历史(注册日期和订阅结束)和网站使用(登录、饮食和锻炼日记、体重和论坛帖子)的回应。如果参与者在12周或52周时持有活跃的订阅计划，他们就会被归类为该计划的成员。如果参与者在12周或52周时停止使用网站的所有功能并且没有回来，他们就会被归类为非用户。 Predictors of nonusage attrition were explored using Cox proportional hazards regression analysis. Results: Of the 9599 eligible participants, 6943 (72%) subscribed to the program for 12 weeks, and 2656 (28%) subscribed for 52 weeks. Of all participants, 31% (2975/9599) were classified as overweight, 61% (5866/9599) were classified as obese, 86% (8279/9599) were female, and participants’ mean (SD) age was 35.7 (9.5) years. The 12 week and 52 week subscribers’ retention rates were 97% and 77% respectively. Of 12 week subscribers, 35% were classified as program “users” after 12 weeks, and 30% of 52 week subscribers were classified as “users” after 52 weeks. Significant predictors of nonusage attrition among 12 week subscribers included age (hazard ratio for 45 to 55 years of age = 0.83, 95% confidence interval [CI] 0.73 - 0.93, P = .001; hazard ratio for 55 to 65 years of age = 0.80, 95% CI 0.66 - 0.99, P = .04), exercise level (hazard ratio = 0.76, 95% CI 0.72 - 0.81, P < .001), emotional eating (hazard ratio = 1.11, 95% CI 1.04 - 1.18, P = .001), eating breakfast (hazard ratio = 0.88, 95% CI 0.82 - 0.95, P = .001), and skipping meals (hazard ratio = 1.12, 95% CI 1.04 -1.19, P = .001). For 52 week subscribers, eating breakfast (hazard ratio = 0.88, 95% CI 0.79 - 0.99, P = .04) and not drinking tea or coffee with sugar (hazard ratio = 1.23, 95% CI 1.11 - 1.37, P < .001) were the pretreatment characteristics that significantly decreased risk of nonusage attrition. Conclusions: The findings demonstrate a high prevalence of nonusage attrition among a cohort of commercial Web-based weight loss program participants. Several sociodemographic and behavioral factors were shown to independently predict nonusage attrition. SN - 1438-8871 UR - //www.mybigtv.com/2010/4/e69/ UR - https://doi.org/10.2196/jmir.1640 UR - http://www.ncbi.nlm.nih.gov/pubmed/21156470 DO - 10.2196/jmir.1640 ID - info:doi/10.2196/jmir.1640 ER -