TY - JOUR AU - Stopponi, Melanie A AU - Alexander, Gwen L AU - McClure, Jennifer B AU - Carroll, Nikki M AU - Divine, George W AU - Calvi, Josephine H AU - Rolnick, Sharon J AU - Strecher, Victor J AU - Johnson, Christine Cole AU - Ritzwoller, Debra P PY - 2009 DA - 2009/8/26 TI -基于web的随机营养干预试验招募:特征的参与者相比,世界性乔- J地中海互联网Res SP - e38六世- 11 - 3 KW -招聘KW -网络干预KW -做出有效的营养选择KW -癌症研究网络KW - CRN KW -水果和蔬菜KW -研究课题选择KW -选择KW -病人KW -大规模筛查KW -互联网KW -动机KW -文化多样性KW -健康维护组织AB -背景:基于网络的行为项目有效地向广大人群传播健康信息，在线定制可能会提高其有效性。虽然基于互联网的行为干预的数量在过去几年中有所增长，但需要更多的信息来了解参与这些干预的受试者相对于受邀参与的受试者的特征。目的:本研究的目的是比较参加在线饮食干预试验(MENU)的参与者与受邀但选择不参加的参与者的特征，以便更好地了解这些群体的差异。方法:MENU试验在参与HMO癌症研究网络的五个健康计划中进行，并与密歇根大学健康传播研究中心合作。每个站点大约有6000名年龄在21岁至65岁之间、按性别分层的健康计划成员被随机挑选出来进行招募，并向他们邮寄了一封包含网站信息的邀请函和一张2美元的钞票，承诺完成后续调查可获得20美元。使用地理编码的行政和基于区域的数据以及基线调查数据被用于比较受邀者(HMO成员发送介绍信)、应答者(在网站上输入研究ID的人)和注册者(完成注册流程的人)。采用广义估计方程、多元回归和逻辑回归模型来评估反应和登记的预测因素。结果:在28,460名被邀请参与的会员中，4270名(15.0%)访问了网站。 Of the eligible responders, 2540 (8.9%) completed the consent form and baseline survey and were enrolled and randomized. The odds of responding were 10% lower for every decade of increased age (P < .001), while the likelihood of enrolling was 10% higher for every decade increase in age (P < .001). Women were more likely to respond and to enroll (P < .001). Those living in a census tract associated with higher education levels were more likely to respond and enroll, as well as those residing in tracts with higher income (P < .001). With a 22% (n = 566) enrollment rate for African Americans and 8% (n = 192) for Hispanics, the enrolled sample was more racially and ethnically diverse than the background sampling frame. Conclusions: Relative to members invited to participate in the Internet-based intervention, those who enrolled were more likely to be older and live in census tracts associated with higher socioeconomic status. While oversampling of minority health plan members generated an enrolled sample that was more racially and ethnically diverse than the overall health plan population, additional research is needed to better understand methods that will expand the penetration of Internet interventions into more socioeconomically diverse populations. Trial Registration: Clinicaltrials.gov NCT00169312; http://clinicaltrials.gov/ct2/show/NCT00169312 (Archived by WebCite at http://www.webcitation.org/5jB50xSfU) SN - 1438-8871 UR - //www.mybigtv.com/2009/3/e38/ UR - https://doi.org/10.2196/jmir.1086 UR - http://www.ncbi.nlm.nih.gov/pubmed/19709990 DO - 10.2196/jmir.1086 ID - info:doi/10.2196/jmir.1086 ER -