Cognitive behavioral therapy for insomnia (CBT-I) is the preferred treatment for chronic insomnia and sleep-related cognitions are one target of treatment. There has been little systematic investigation of how sleep-related cognitions are being assessed in CBT-I trials and no meta-analysis of the impact of CBT-I on dysfunctional beliefs about sleep, a core cognitive component of treatment. Academic Search Complete, Medline, CINAHL and PsychInfo from 1990 to 2018 were searched to identify randomized controlled trials of CBT-I in adults (≥18 years) reporting some measure of sleep-related cognitions. Sixteen randomized controlled trials were identified comparing 1134 CBT-I and 830 control subjects. The Dysfunctional Beliefs and Attitudes about Sleep Scale was utilized almost exclusively to assess sleep-related cognitions in these trials. Hedge's g at 95% confidence interval (CI) was calculated to assess CBT-I effect size at post-treatment compared to controls. CBT-I significantly reduced dysfunctional beliefs about sleep (g = −0.90, 95% CI -1.19, −0.62) at post-treatment. Three trials contributed data to estimate effect size for long-term effects (g = −1.04, 95% CI -2.07, −0.02) with follow up time ranging from 3 to 18 mo. We concluded that cognitive behavioral therapy for insomnia has moderate to large effects on dysfunctional beliefs about sleep.

失眠认知行为疗法（CBT-I）是慢性失眠的首选治疗方法，与睡眠相关的认知是治疗目标之一。对于如何在 CBT-I 试验中评估与睡眠相关的认知，几乎没有系统的调查，也没有对 CBT-I 对睡眠功能障碍信念（治疗的核心认知组成部分）的影响进行荟萃分析。检索了1990年至2018年的Academic Search Complete、Medline、CINAHL和PsychInfo，以确定成人（≥18岁）的CBT-I随机对照试验，报告了一些睡眠相关认知的测量结果。确定了 16 项随机对照试验，对 1134 名 CBT-I 受试者和 830 名对照受试者进行了比较。在这些试验中，关于睡眠的功能失调信念和态度量表几乎专门用于评估与睡眠相关的认知。计算 95% 置信区间 (CI) 下的 Hedge g，以评估治疗后与对照组相比的 CBT-I 效应大小。CBT-I 显着降低了治疗后对睡眠的功能失调信念（g = -0.90，95% CI -1.19，-0.62）。三项试验提供了数据来估计长期效应的效应大小（g = -1.04，95% CI -2.07，-0.02），随访时间范围为 3 至 18 个月。我们的结论是，针对失眠的认知行为疗法对睡眠的功能失调信念具有中等到大的影响。