Newborn health and the business cycle: The role of birth order

We use 35 years of administrative data to document how newborn health varies with the business cycle in Spain. In panel regressions that include province and year fixed effects as well as province trends, we show that children have significantly better health outcomes at birth in times of high unemployment: a 10 percentage-point increase in the unemployment rate is significantly associated with about 2 log-points higher birth-weight, almost 2 percentage points fewer babies with low birth weight, 0.6 points fewer babies with very low birth-weight, and a 0.4-point drop in mortality rates in the first 24 h We explore several potential mechanisms. First, we show that the documented association is not driven by in-utero selection: we do not find that high unemployment is associated with more miscarriages, abortions, or stillbirths. Second, we explore the role of composition in terms of parental characteristics. We find evidence that unmarried and younger parents, who typically have unhealth...