The authors report the effect of active parental consent on sample bias among rural seventh graders participating in a drug abuse prevention trial. Students obtaining active consent from their parents to complete the survey were of higher academic standing, missed fewer days of school, and were...

A growing body of evidence points to the complexity of sexual behaviour. HIV risk behaviour is influenced by factors at three levels: within the person, within the proximal context (interpersonal relationships and physical and organisational environment) and within the distal context (culture...

AIDS, as a social phenomenon, is highly politicized and is an emotive issue. In South Africa there is considerable disagreement between different sectors and stakeholders involved in school education about what constitutes an appropriate approach to AIDS education. For AIDS education programmes...

Elswhere we have presented a traveling-wave analysis of HIV transmission on a tightly self-interactive, geographically-focused core group social network (Wallace R. Soc. Sci. Med. 32, 847, 1991; Soc. Sci. Med. 33, 1155, 1991; Environ. Plan. A. 26, 767, 1994; Wallace R. and Fullilove M. Environ. Plan. A. 23,...

Rapid urbanisation has historically resulted in complex societal changes which have had both beneficial and adverse effects on the health of communities. Recently, it has been recognised that the urban poor in developing countries are at greatest risk for several adverse health effects. The...

In spite of high levels of poverty in low and middle income countries (LMIC), and the high burden posed by common mental disorders (CMD), it is only in the last two decades that research has emerged that empirically addresses the relationship between poverty and CMD in these countries. We...

During 1992 a qualitative evaluation of a government health service-run community health worker (CHW) project in South Africa found that project workers were doing good work despite serious structural shortcomings related to lack of community participation and inadequate integration of the...

Purpose: What are the trade-offs between public and private ownership in the business and how does this impact industries responsible for providing and offering services on critical national infrastructure? The privatisation of British Telecom (BT), the UK telecommunications provider that was...