This may be done in many ways, but it is important to consider the possibility of having information not only on the existence or non-existence of programmes, but also on their coverage, quality and impact.
这样做的方式可以多种多样，但重要的是考虑是否可能获得不仅关于存在或不存在有关方案，而且关于这些方案的覆盖范围、质量和影响的信息。