In some regions, it has been shown that investments in water supply and sanitation can yield a net economic benefit, since the reductions in adverse health effects and health care costs outweigh the costs of undertaking the interventions.
Such studies would enable exploration of the value of group psychoeducation from different perspectives and the barriers to benefitting from or undertaking the interventions, as well as delivering them in practice.
Six nurses undertook the intervention.
The main purpose of these data collection phases is the evaluation of the impact of system-level changes, rather than recruiting patients who will undertake the intervention.
Identifying existing evidence Before a substantial evaluation is undertaken, the intervention must be developed to the point where it can reasonably be expected to have a worthwhile effect.
In order to identify the specific resources related to the policy intervention, it is important to focus on the incremental inputs, or in other words, the additional resources or inputs necessary to undertake the intervention beyond the already engaged inputs.
After randomisation, one school refused to undertake the intervention; the head reported that they had hoped they would be randomised to control and did not have the time or capacity to accommodate the intervention.
