OBJECTIVE This meta-analysis examined the relative efficacy of bona fide psychotherapy conditions in generalized anxiety disorder (GAD) from posttreatment to follow-up in adults. METHODS Omnibus tests of relative efficacy across bona fide psychotherapies for primary and secondary outcomes were conducted. Longitudinal multilevel subgroup analyses investigated, (a) applied relaxation versus cognitive behavioral therapy (CBT) without applied relaxation and (b) well-established CBT versus augmented integrative CBT. RESULTS In total, 54 repeated effect sizes nested in 23 studies were included in this meta-analysis. Omnibus test of relative efficacy indicated no significant differences among the bona fide psychotherapy contrasts in primary and some differences in secondary outcomes. When contrasting applied relaxation with CBT without applied relaxation, negligible relative efficacy differences were found at each assessment time. There were small efficacy differences in favor of augmented integrative CBT in comparison to well-established CBT. CONCLUSION Small relative efficacy differences were found between bona fide psychotherapies in GAD. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

中文翻译：

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真正的认知行为疗法和应用放松对广泛性焦虑症随访的相对疗效：纵向多层次荟萃分析。

目的 这项荟萃分析检查了真正的心理治疗条件在成人广泛性焦虑症 (GAD) 从治疗后到随访的相对疗效。方法 对真正的心理治疗对主要和次要结局的相对疗效进行综合测试。纵向多水平亚组分析调查了（a）应用放松与认知行为疗法（CBT）没有应用放松和（b）成熟的CBT与增强的综合CBT。结果 总共有 54 个重复效应大小嵌套在 23 项研究中，被包括在这项荟萃分析中。相对疗效的综合测试表明，真正的心理治疗对比在主要结果和次要结果中的一些差异之间没有显着差异。当对比应用放松与不应用放松的 CBT 时，在每个评估时间发现可忽略不计的相对疗效差异。与完善的 CBT 相比，有利于增强综合 CBT 的疗效差异很小。结论 在 GAD 中，真正的心理疗法之间存在较小的相对疗效差异。（PsycInfo 数据库记录 (c) 2022 APA，保留所有权利）。