We study the relationship between regulatory regimes and pharmaceutical firms' pricing strategies using a unique policy experiment from Norway, which in 2003 introduced a reference price (RP) system called "index pricing" for a sub-sample of off-patent pharmaceuticals, replacing the existing...

Fathers' multiple-partner fertility (MPF) is associated with substantially worse educational outcomes for children. We focus on children in fathers' “second families” when the second families are nuclear families – households consisting of a man, a woman, their joint children, and no other...

Although it is important to establish causal relationships in social policy evaluation, the effects are difficult to observe due to sample selection. To evaluate the performance of estimators designed to handle sample selection bias, we analyse data from a Norwegian rehabilitation project with a...

Although it is important to establish causal relationships in social policy evaluation, the effects are difficult to observe due to sample selection. To evaluate the performance of estimators designed to handle sample selection bias, we analyze data from a Norwegian rehabilitation project with a...

Sickness incidence and recovery are likely to be affected not only by characteristics of individual workers, but also by the conditions under which they work. Large register data bases have been available for researchers in several countries for some years now, allowing detailed research on how...

Sample attrition is a potential source of selection bias in experimental, as well as non-experimental programme evaluation. For labour market outcomes, such as employment status and earnings, missing data problems caused by attrition can be circumvented by the collection of follow-up data from...

We analyze and compare inequity in use of physician visits (GP and specialists) in Norway based on data from the Surveys of Living Conditions for the years 2000, 2002 and 2005. Within this period the Norwegian public health care system underwent two major reforms, both aimed at ensuring...