About evidence and personal experiences in transition

Figure 1: The evidence pyramid. next, and systematic reviews and meta-analyses at the very top (Figure 1A). As there are often methodological problems with reviews, these have been separated from the rest of the pyramid (Figure 1B) and the hierarchy of the different study types themselves has been less strictly applied. For example, somewell-designed case-controlled studies with larger number of patients might give better evidence than weak cohort studies (Figure 1C). Especially if the number of randomized controlled trials (RCT) is low