RESUMEN
Objective To determine the extent to which the community-directed approach used in onchocerciasis control in Africa could effectively and efficiently provide integrated delivery of other health interventions.Methods A three-year experimental study was undertaken in 35 health districts from 2005 to 2007 in seven research sites in Cameroon; Nigeria and Uganda. Four trial districts and one comparison district were randomly selected in each site. All districts had established ivermectin treatment programmes; and in the trial districts four other established interventions - vitamin A supplementation; use of insecticide-treated nets; home management of malaria and short-course; directly-observed treatment for tuberculosis patients - were progressively incorporated into a community-directed intervention (CDI) process. At the end of each of the three study years; we performed quantitative evaluations of intervention coverage and provider costs; as well as qualitative assessments of the CDI process. Findings With the CDI strategy; significantly higher coverage was achieved than with other delivery approaches for all interventions except for short-course; directly-observed treatment. The coverage of malaria interventions more than doubled. The district-level costs of delivering all five interventions were lower in the CDI districts; but no cost difference was found at the first-line health facility level. Process evaluation showed that: (i) participatory processes were important; (ii) recurrent problems with the supply of intervention materials were a major constraint to implementation; (iii) the communities and community implementers were deeply committed to the CDI process; (iv) community implementers were more motivated by intangible incentives than by external financial incentives. Conclusion The CDI strategy; which builds upon the core principles of primary health care; is an effective and efficient model for integrated delivery of appropriate health interventions at the community level in Africa