ABSTRACT
We found 175 studies covering 97 CP systems from at least nine countries (Table 10.1). Almost half came from the USA and a fair number from the UK, Sweden and Australia. Almost a third of the CP systems were netbased. The most frequent type of study was an RCT. The RCTs most often had waitlist or care-as-usual controls, confounding interpretation of results as we discussed in Chapter 1. Placebo-attention controls are not yet as common in CP as in drug-therapy research.
