Tein Jenn-Yun, Mazza Gina L, Gunn Heather J, Kim Hanjoe, Stuart Elizabeth A, Sandler Irwin N, Wolchik Sharlene A
1 Department of Psychology, REACH Institute, Arizona State University, Tempe, AZ, USA.
2 University of Houston, Houston, TX, USA.
Eval Health Prof. 2018 Jun;41(2):290-320. doi: 10.1177/0163278718763499. Epub 2018 Apr 10.
We used a multigroup propensity score approach to evaluate a randomized effectiveness trial of the New Beginnings Program (NBP), an intervention targeting divorced or separated families. Two features of effectiveness trials, high nonattendance rates and inclusion of an active control, make program effects harder to detect. To estimate program effects based on actual intervention participation, we created a synthetic inactive control comprised of nonattenders and assessed the impact of attending the NBP or active control relative to no intervention (inactive control). We estimated propensity scores using generalized boosted models and applied inverse probability of treatment weighting for the comparisons. Relative to the inactive control, NBP strengthened parenting quality as well as reduced child exposure to interparental conflict, parent psychological distress, and child internalizing problems. Some effects were moderated by parent gender, parent ethnicity, or child age. On the other hand, the effects of active versus inactive control were minimal for parenting and in the unexpected direction for child internalizing problems. Findings from the propensity score approach complement and enhance the interpretation of findings from the intention-to-treat approach.
我们采用多组倾向得分法来评估“新起点计划”（NBP）的随机有效性试验，该计划是一项针对离异或分居家庭的干预措施。有效性试验的两个特点，即高缺勤率和纳入积极对照组，使得项目效果更难被检测到。为了基于实际干预参与情况来估计项目效果，我们创建了一个由未参与者组成的合成非积极对照组，并评估了参与NBP或积极对照组相对于无干预（非积极对照组）的影响。我们使用广义增强模型估计倾向得分，并应用治疗权重的逆概率进行比较。相对于非积极对照组，NBP提高了养育质量，同时减少了儿童暴露于父母间冲突、父母心理困扰和儿童内化问题的情况。一些效果受到父母性别、父母种族或儿童年龄的调节。另一方面，积极对照组与非积极对照组相比，在养育方面的效果甚微，而在儿童内化问题方面的效果则出乎意料。倾向得分法的研究结果补充并增强了意向性分析方法研究结果的解释。
