Gregory Virgil L
School of Social Work, Indiana University Purdue University, Indianapolis, Indiana, USA.
J Evid Based Soc Work. 2010 Jul;7(4):269-79. doi: 10.1080/15433710903176088.
Given the prevalence of null hypothesis significance testing, cognitive-behavioral therapy's effect on depressive symptoms of bipolar disorder is not fully understood in the absence of effect size statistics. The present study discusses the disadvantages associated with null hypothesis significance testing and seeks to overcome these shortcomings via conducting a meta-analysis which examines cognitive-behavioral therapy for depressive symptoms in persons with bipolar disorder. A systematic literature search was conducted and included articles were subject to meta-analytic procedures. With a mean weighted Cohen's d of -0.29, relative to treatment as usual, cognitive-behavioral therapy has a small effect on depressive symptoms in persons with bipolar disorder. The strengths, limitations, and need for future research are discussed.
鉴于虚无假设显著性检验的普遍存在，在缺乏效应量统计的情况下，认知行为疗法对双相情感障碍抑郁症状的影响尚未得到充分理解。本研究讨论了与虚无假设显著性检验相关的缺点，并试图通过进行一项荟萃分析来克服这些缺点，该荟萃分析考察了针对双相情感障碍患者抑郁症状的认知行为疗法。进行了系统的文献检索，纳入的文章采用荟萃分析程序。相对于常规治疗，认知行为疗法对双相情感障碍患者的抑郁症状有较小的影响，平均加权科恩d值为-0.29。文中讨论了研究的优势、局限性以及未来研究的必要性。
