Health researchers commonly use the notion of complexity to indicate the problems faced in evaluating the effectiveness of many non-drug interventions.1-3 However, although it is rarely delineated, complexity has two meanings. In the first it is a property of the intervention, and in the second it is a property of the system in which the intervention is implemented. We examine the implications ...

Compared to many applied areas of economics, health economics has a strong tradition in eliciting and using stated preferences (SP) in policy analysis. Discrete choice experiments (DCEs) are one SP method increasingly used in this area. Literature on DCEs in health and more generally has grown rapidly since the mid-1990s. Applications of DCEs in health have come a long way, but to date few have...

The World Health Organisation (WHO) defines environmental health as encompassing those elements of human health that are influenced by physical, chemical, biological, social and psychological factors in the environment. It also refers to the theory and processes of analysing, managing and preventing those elements in the environment that have the potential to negatively affect the health of pre...

Introduction Groundwater supply sustainable yield is herein defined as how much water can be withdrawn from an aquifer system, where and for how long, with acceptable physical, economical, environmental, social, cultural, institutional, and legal consequences. The purpose of this Technical Commentary is to focus on the following technical aspects of groundwater supply sustainable yield that are...

the relationship between population structure and violent conflict is complex and heavily dependent on the behavior of other variables like governance, economic prospects, and urbanization. while addressing rapid population growth might be a necessary condition for peace, it is by no means sufficient. concomitant steps must also be taken to foster inclusivity, guarantee broader rights for all, ...