The World Bank and the Center for International Comparisons at the University of Pennsylvania, USA. As the trend from 1990 to 2010 is estimated, the time reference of the data gathered starts from 1985, in order to cover fully the period around 1990. Deaths due to AIDS were obtained from UNAIDS (unpublished tables from the Global Report: UNAIDS Report on the Global AIDS Epidemic 2010. New York, UNAIDS, 2010), deaths among women aged 15–49 years from WHO life tables (23); live births from UNPD (24); the presence of a skilled attendant at birth as a proportion of total births (SAB) from UNICEF (25); and gross domestic product.
