BMC Health Serv Res 2007;7:119

Int J Evid Based Healthc 2007;5:468-76

SR: Knowledge, Skills, Behavior, Attitudes

short term, uncontrolled trial - ^ knowledge

No studies: satisfaction, HR QOL,

1 study: possibly improved health

No studies; cost-effectiveness

Hamper: few studies, small populations, heterogeneity

... contamination, unvalidated outcomes

Ideal: adequately powered, appropriate comparators, generalisable, cluster randomized, hard patient-based endpoints