Serodiscordant couples were identified as an at-risk group in the Kenya National AIDS Strategic Plan [ 23], but prevention strategies have been found to be weakly implemented, contain no systematic messages, and have been left to research pilot projects [ 32].
Although support from colleagues and educational meetings have been found to be effective in implementing guideline use [ 18, 19], workplace policies have not been considered in previous studies [ 18- 20].
CHW systems have been found to be effective in implementing interventions to prevent under-five deaths, including malaria prevention, health education, breastfeeding promotion, essential newborn care and psychosocial support [ 4].
Site visits, examinations using standardised patients, and case recall interviews have been found to be too expensive or impossible to implement with the huge number of doctors in the USA.
Approaches that have been found to be effective when well implemented, such as comprehensive sexuality education and youth-friendly services, have tended to flounder as they have considerable implementation requirements that are seldom met.
Community-based participatory women's group interventions have been found to be particularly effective in implementing behaviour change amongst mothers and potential birth attendants with positive effects on newborn birth outcomes [ 21- 23], and further research is urgently needed as to the effectiveness of this intervention in sub-Saharan Africa.
Well-designed early childhood interventions implemented in the West have been found to generate a return to society ranging from $1.80 to $17.07 for each programme dollar spent (Karoly et al., 2005).
Nevertheless, it has been found to be applicable to implement in real plants with much lower computation effort, easier state initialization and unrequired a priori knowledge of thermodynamics.
Furthermore, multi-professional compared with profession-specific change has been found to be more difficult to implement [ 44].
Pre-implementation training has been found to increase the integrity with which teachers implement a curriculum [ 37, 44 46] because it enhances teachers' skills that are relevant to the intervention program [ 19].
