Some 67 journal articles that described & evaluated health schooling programmes in developing countries were read by independent reviewers who examined the methodology used in the studies. Of the articles 47% provided a sufficiently detailed description of the educational intervention to permit replication & 40% described the educational level of the intended audience.
Only 21% were controlled studies employing sample sizes greater than 60 individuals or clusters, although six studies used randomized or quasi-randomized designs. Of the studies 33% looked at changes in health status while another 33%used observable changes in health behaviour as an endpoint. There was nice agreement between the reviewers on whether these characteristics were present.