Supplementary Material for: Short-Term Psychodynamic Psychotherapy for Functional Somatic Disorders: A Meta-Analysis of Randomized Controlled Trials

<b><i>Introduction:</i></b> Functional<b><i></i></b>somatic disorders (FSD) are common and costly, thereby driving the need for the development of effective brief treatment options. Short-term psychodynamic psychotherapy (STPP) is one candidate treatment method. <b><i>Objective:</i></b> To review and meta-analyze, where possible, randomized controlled trials (RCTs) of STPP for FSD. <b><i>Methods:</i></b> Following a systematic search of the literature, we performed a meta-analysis of available RCT groups to determine the effects of STPP on a range of outcomes after treatment, and medium- and long-term follow-ups. <b><i>Results:</i></b> In meta-analyses of 17 RCTs, STPP significantly outperformed minimal treatment, treatment as usual, or waiting list controls on somatic symptom measures at all time frames, with small to large magnitude effect sizes. Descriptive reviews of 5 RCTs suggest that STPP performed at least as well as other bona fide psychological therapies. Limitations of this meta-analysis include small samples of studies and possible publication bias. <b><i>Conclusions:</i></b> STPP is a valid treatment option for diverse FSD conditions resulting in somatic symptom reductions that persist over time. STPP should be included in FSD treatment guidelines.

引言：
功能性躯体障碍（Functional Somatic Disorders, FSD）患病率较高且医疗成本高昂，因此亟需开发有效的短程治疗方案。短期精神动力学心理治疗（Short-term Psychodynamic Psychotherapy, STPP）是候选治疗方法之一。
研究目的：
尽可能针对功能性躯体障碍的短期精神动力学心理治疗随机对照试验（Randomized Controlled Trials, RCTs）开展综述与元分析。
研究方法：
在对文献进行系统性检索后，本研究对可获取的随机对照试验组开展元分析，以评估短期精神动力学心理治疗在治疗后、中期及长期随访阶段对多项结局指标的影响。
研究结果：
针对17项随机对照试验的元分析结果显示，在所有时间节点的躯体症状测量指标评估中，短期精神动力学心理治疗的效果均显著优于最低限度干预、常规治疗或等待列表对照组，效应量从小至大型不等。针对5项随机对照试验的描述性综述表明，短期精神动力学心理治疗的疗效至少不逊于其他正规心理治疗手段。本项元分析的局限性在于纳入研究的样本量较小，且可能存在发表偏倚。
研究结论：
短期精神动力学心理治疗是治疗各类功能性躯体障碍的有效方案，可显著减轻躯体症状且疗效持久，应被纳入功能性躯体障碍的治疗指南。