This study's goal was to determine whether differences in data or differences in methods explain the divergence between the mortality estimates at ages 65 and older of the Social Security Administration (SSA) and the Human Mortality Database (HMD). These differences, increasing since 1968, are...

This paper observes the change since the 1970s in the proportion of men and women having only one child during their reproductive life, and examines their sociodemographic characteristics. The aim is to explore the significant variables of the complement of the parity progression ratio from...