“…In parallel, treatments for chronic pain based on Mindfulness have also been developed, such as Mindfulness-Based Stress Reduction (MBSR) [7] and Mindfulness-Based Cognitive Therapy for Chronic Pain (MBCT-CP) [8]. A recent transdiagnostic study [9] and several meta-analyses [10][11][12] have indicated that although MBCT-CT is superior to CBT, in general, it has a similar efficacy in variables related to pain intensity and interference, as well as psychological variables, in all diagnostic groups (fibromyalgia, low back pain, unspecified chronic pain and headache) [10][11][12]. However, studies on the subject are scarce and highly heterogeneous concerning the variables studied, the types of samples, and the measurement instruments used.…”