We study the link between illness severity and the use of public health care services by the privately insured under a public health system. Our theoretical model shows that this relationship will depend on the prioritization established by the public health authorities, the cost of waiting and...

Balanced experimental designs, in which the number of treatment and control units are the same, do not maximize power subject to a cost constraint when treat-ment units are more expensive than control ones. Despite this, such balanced designs are the norm in economics. This paper describes...

We show that children who are born at or just before the weekend are less likely to be breastfed, owing to poorer breastfeeding support services in hospitals at weekends. We use this variation to estimate the effect of breastfeeding on children's development in the first five years of life, for...