Pham-Kanter, Genevieve; Goldman, Noreen - 2013
Background: Although sons are thought to impose greater physiological costs on mothers than daughters, sons may be … parental mortality. Results: Based on 7 measures of sex composition, we find no protective effect of sons in either China or … Taiwan. For example, in the 1989 Taiwan sample, the hazard ratio for maternal mortality associated with having an eldest son …