Predictors of attrition and weight loss in an adolescent weight control program
Predictors of attrition and weight loss in an adolescent weight control program
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DOI：
10.1038/oby.2008.51
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发表时间：
2008-06-01
期刊：
影响因子：
6.9
通讯作者：
Wing, Rena R.
中科院分区：
文献类型：
--
作者：
Jelalian, Elissa;Hart, Chantelle N.;Wing, Rena R.
目的：在一项基于行为的青少年体重控制试验中，评估消耗和体重减轻的人口学和社会心理预测因素。方法和程序：作为一项比较不同活动干预对超重青少年的影响的随机试验的一部分，年龄在13-16岁、体重超重20-80% （M = 60.56%, sd = 15.17%）的青少年（N = 76）接受了标准的群体行为治疗。在基线和16周干预后获得人体测量和心理社会测量。结果：在单因素分析中，较高的基线父母（P < 0.01）、青少年BMI （P < 0.05）以及少数民族身份（P < 0.05）与磨耗显著相关。在多变量分析中，父母体重指数仍然是唯一重要的减员预测因子。完成者（N = 62）的BMI变化变化很大，范围从-6.09到+1.62 BMI单位。在多变量分析中，男性（P < 0.01）是BMI降低的显著预测因子，而非少数民族（P < 0.05）和参加小组会议（P = 0.05）与绝对体重减轻= 5%相关。项目前4周的绝对体重减轻与其余干预期间的体重减轻密切相关（pr = 0.44, P < 0.001）。心理社会变量与减员或治疗结果无关。讨论：这些发现强调了关注父母BMI在努力留住青少年参与者治疗中的潜在重要性，以及开发对少数民族青少年更有效的体重控制干预措施的必要性。
Objective: To evaluate demographic and psychosocial predictors of attrition and weight loss in a behaviorally based adolescent weight control trial.Methods and Procedures: Adolescents (N = 76) aged 13-16 years and 20-80% overweight (M = 60.56%, s.d. = 15.17%) received standard group-based behavioral treatment as part of a randomized trial comparing different activity interventions for overweight adolescents. Anthropometric and psychosocial measures were obtained at baseline and after the 16-week intervention.Results: Higher parent (P < 0.01) and adolescent BMI (P < 0.05) at baseline, as well as ethnic minority status (P < 0.05) were significantly associated with attrition in univariate analyses. Parent BMI remained the only significant predictor of attrition in multivariate analyses. BMI change for completers (N = 62) was highly variable, ranging from -6.09 to +1.62 BMI units. Male gender (P < 0.01) was a significant predictor of reduction in BMI, whereas not being from an ethnic minority group (P < 0.05) and attendance at group sessions (P = 0.05) were associated with = 5% absolute weight loss in multivariate analyses. Absolute weight loss during the first 4 weeks of the program was strongly associated with weight loss (pr = 0.44, P < 0.001) during the remainder of the intervention. Psychosocial variables were unrelated to attrition or treatment outcome.Discussion: These findings highlight the potential importance of attending to parental BMI in efforts to retain adolescent participants in treatment, as well as the need to develop weight control interventions that are more effective for ethnic minority youth.