Fertility and sterility
This study examined the incidence of monozygotic twinning of one embryo with the use of cycles in which only one embryo, treated by various assisted reproductive technologies (ART), was transferred. It also examined the possibility of demographic alterations in the overall incidence of monozygotic twinning in Japan induced by ART. A total of 134 cl...
Journal of biosocial science
This study examines the delay between first marriage and first live birth in China among a sample of women who married between 1980 and 1992. Most couples in China only use contraception after the first child is born. Most sample women had their first child within 2 years of marriage. However, there are significant rural-urban differences in the fi...
Lancet (London, England)
Although there are barriers to widespread HIV-1 treatment, limited use of antiretrovirals could have an immediate and substantial impact on South Africa's AIDS epidemic.
Development bulletin (Australian Development Studies Network)
In 1999, the Government of Zimbabwe declared the AIDS epidemic to be a national disaster. The country has one of the highest reported HIV seroprevalence rates in Africa and is experiencing its economic and social impacts. The epidemic is currently at its peak, hitting hardest the economically important and most sexually active age group (aged 15-45...
World of work : the magazine of the ILO
A report discussed during the Ninth Regional Meeting confirmed the significant impact of AIDS on the economy and labor practices in Africa. The report, entitled ¿Action against HIV/AIDS in Africa: An initiative in the context of the world of work,¿ stated that the AIDS epidemic would result in increased absenteeism, female-headed households, labor ...
Standard models and theories of internal migration and urban growth in Estonia have been developed. However, there remained a lack of statistical wherewithal to conduct the required kind of analysis. For instance, certain categories of migration are likely to have been underreported and it is clear that existing rules and regulations on how to repo...
European journal of population = Revue europeenne de demographie
This paper presents a mathematical model that describes the demography of a population that is afflicted by a series of epidemics of a lethal infectious disease. Annual reports from the Medical Officer of Liverpool, between 1963 and 1999, were utilized in the time-series analysis to illustrate the dynamics of measles in the city. The results coinci...
Econometrica : journal of the Econometric Society
This paper examines the sharing of risks between generations in the framework of an overlapping generations model of social security with shocks to the productivity of labor and capital and demographic shocks. The study focused on stationary long run allocations. The concept of interim optimality was utilized, which amounts to standard Pareto optim...
International journal of population geography : IJPG
"How one conceptualises the impacts of migration depends on whether one takes the viewpoint of aggregate area-level income change, of per capita change, or of longer-term (future earnings) change. Several empirical analytical measures are proposed in order to conceptualise the various income impacts of migration.... [A] decomposition procedure is d...
Africa's population and development bulletin
The Joint UN Programme for HIV/AIDS reported that, at the end of 1998, 33.4 million people were infected with HIV/AIDS, 95% of whom live in developing countries. In sub-Saharan Africa, about 22.5 million were infected despite decades of effort in the eradication of the disease. Social and political instability in Africa has been the major factor in...