The various types of evidence that may be used in responding to drug problems differ in their strengths and weaknesses and in the information they can provide. Drug-related problems are multifaceted and require not only medical, but also socioeconomic and educational interventions. As a result, it is often necessary to integrate evidence from a range of disciplines and types of study, using both quantitative and qualitative research methods.
This spotlight discusses how we can understand and use different types of evidence when developing and implementing responses to particular problems. It also details how the evidence used in the development of the Health and social responses to drug problems: a European guide 2021 was evaluated and summarised.