Ires Ghielen

103 Meta-analyses on psychotherapies in MS and PD Results Selected studies After removing duplicate studies, 156 records were found. After inspection of the titles and abstracts, 24 full-text articles were retrieved. In addition, four studies were included from past meta-analyses, resulting in 28 full-text articles that were read. Figure 1 presents the flowchart of the inclusion process with reasons for exclusion, following the PRISMA statement [30]. Eventually, 19 studies were included, of which 12 were included in the first meta-analysis, and seven in the second meta-analysis. Figure 1. PRISMA flow chart of selection and inclusion process. CBT = Cognitive Behavioral Therapy, MBT = Mindfulness Based Therapy; RCT = randomized controlled trial. Characteristics of included studies Table 1 shows the characteristics of the included studies, displayed separately for the two main meta-analyses. Within the first analysis, eight studies included MS patients [31-38], four studies included PD patients [39-42], and no RCTs were found investigating HD populations. Nine studies examined a CBT-based intervention [31, 33-37, 39, 41, 42] and three studies investigated an MBT [32, 38, 40]. 6