This paper compares the use of parametric and non-parametric approaches to adjust for heterogeneity in self-reported data. Despite the growing popularity of the HOPIT model to account for reporting heterogeneity when dealing with self-reported categorical data, recent evidence has questioned the...

This paper investigates the influence of aggregate country-level characteristics on health system responsiveness, using data on 62 countries present in the World Health Survey. While evidence exists on variations in reported levels of health system responsiveness across countries, the literature...

Despite the growing popularity of the vignette methodology to deal with self-reported, categorical data, the formal evaluation of the validity of this methodology is still a topic of research. Some critical assumptions need to hold in order for this method to be valid. In this paper we analyse...