基于网络的方案在“家庭一起努力减肥试验”中的使用和保留情况。
Web-Based Program Exposure and Retention in the Families Improving Together for Weight Loss Trial.
机构信息
Department of Psychology, Barnwell College, University of South Carolina, Columbia, SC, USA.
Diabetes Health and Wellness Institute, Baylor Scott and White Health, Dallas, TX, USA.
出版信息
Ann Behav Med. 2019 Mar 20;53(4):399-404. doi: 10.1093/abm/kay047.
BACKGROUND
Interventions that incorporate behavioral skills training and parental involvement have been effective for promoting weight loss among middle and upper class youth; however, few studies have produced similar weight loss effects in underserved ethnic minority youth.
PURPOSE
This study examined whether online program exposure (in both an online tailored intervention and an online health education comparison program) predicted greater retention among African American youth and their parents in the Families Improving Together (FIT) for Weight Loss trial.
METHODS
Parent-adolescent dyads (N = 125) were randomized to either an online tailored intervention program (n = 63) or an online health education comparison program (n = 62). Paradata including login data were used to determine the number of sessions viewed (0-8) and the number of minutes spent online per session. Study retention, defined as collection of adolescent anthropometric measures at 6 months postintervention, was the outcome.
RESULTS
Logistic regression analyses showed a significant effect for login rate on retention (OR = 1.21, 95% CI [1.04, 1.39]). Total number of sessions viewed, child age, child sex, parent age, and parent sex accounted for 11% of the variance in retention at 6 months post- intervention. Participants who were retained spent a significantly greater number of minutes during each session (M = 12.99, SD = 11.63) than participants who were not retained (M = 7.77, SD = 11.19), t(123) = 2.24, p = .027, d = 0.45.
CONCLUSIONS
The use of paradata from online interventions is a novel and feasible approach for examining exposure in web-based interventions and program retention in underserved ethnic minority families.
TRIAL REGISTRATION
ClinicalTrials.gov NCT01796067. Registered January 23, 2013.
背景
将行为技能培训和家长参与相结合的干预措施已被证明能有效促进中上层青年的体重减轻；然而，很少有研究能在服务不足的少数族裔青年中产生类似的减肥效果。
目的
本研究旨在检验在线项目参与（包括在线定制干预和在线健康教育对照项目）是否能预测在美国“家庭共同促进减肥计划”（Families Improving Together for Weight Loss，FIT）试验中，非裔美国青少年及其父母的保留率更高。
方法
家长-青少年二人组（N=125）被随机分配到在线定制干预项目（n=63）或在线健康教育对照项目（n=62）。使用使用使用数据来确定观看的课程数量（0-8 节）和每次课程在线花费的时间（分钟）。研究保留率，定义为干预后 6 个月青少年人体测量指标的收集，作为结果。
结果
逻辑回归分析显示登录率对保留率有显著影响（OR=1.21，95%CI[1.04，1.39]）。观看的课程总数、孩子年龄、孩子性别、家长年龄和家长性别占干预后 6 个月保留率差异的 11%。保留的参与者在每次课程中花费的时间明显更多（M=12.99，SD=11.63），而未保留的参与者（M=7.77，SD=11.19），t（123）=2.24，p=.027，d=0.45。
结论
使用在线干预措施中的使用数据是一种新颖且可行的方法，可用于检查基于网络的干预措施中的暴露情况和服务不足的少数族裔家庭中的项目保留率。
试验注册
ClinicalTrials.gov NCT01796067。于 2013 年 1 月 23 日注册。
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