Whether age at first childbirth has an effect on hypertension incidence is unclear. The objectives of this study were to examine the relationship between age at first childbirth and hypertension and to examine whether degree of obesity, measured as body mass index, mediates age at first childbirth-related hypertension in postmenopausal women. This study analyzed 4779 postmenopausal women data f...

BACKGROUND Although measles vaccination is recommended to be given at nine months of age in Ethiopia and in most of sub-Saharan Africa, no information is available about the age at which children actually receive their first dose of measles vaccine. This has important implications in terms of preventing infection and averting epidemics of measles. OBJECTIVE To determine the age at which Ethio...

The data of 35 years from 1980 to 2014 were analyzed to study the effect of genetic and non-genetic factors viz. period of calving, season of calving as fixed effect and sire as random effect on the reproduction trait (age at first calving) of Kankrej cattle maintained at Livestock Research Station, S.D. Agricultural University, Sardarkrushinagar, Gujarat. The least square mean of age at first ...

Because of difficulties in data collection and analysis, in most breeds there have been limited ways to evaluate fertility in females on a between-herd basis. The objective of this study was to determine the heritabilities (direct and maternal) for CD (calving day) and AFC (age at first calving) in American Angus heifers and to evaluate the potential for using these traits in genetic improvemen...

BACKGROUND Brazil has witnessed dramatic changes in its fertility patterns in recent decades. The decline to below-replacement fertility has been accompanied by increases in the proportion of children born to young mothers. Yet we know little about the well-being of children born to young mothers in Brazil. OBJECTIVE AND METHODS Using data from the 2006 Pesquisa Nacional de Demografia e Saúde...

Dr. Duncan Sinclair, the former dean of medicine who heads the commission charged with restructuring Ontario's health care system, said something dramatic was needed to revamp the system. He wasn't kidding. His commission recently called for the closure of 3 hospitals in Ottawa and 10 more in Toronto. In a wideranging interview with Charlotte Gray he talks about the commission's goals and their...

The low school attainment, early marriage, and low age at first birth of females are major policy concerns in less developed countries. This study jointly estimated the determinants of educational attainment, marriage age, and age at first birth among females aged 12-25 in Madagascar, explicitly accounting for the endogeneities that arose from modelling these related outcomes simultaneously. An...

OBJECTIVES To identify factors associated with sexual debut and early age at first sex (AFS) among young men and women (12-25 years) in a population with a high prevalence and incidence of HIV in rural South Africa. METHODS Longitudinal data from four rounds (2003-7) of a prospective population-based HIV and sexual behaviour survey in rural KwaZulu-Natal were used to investigate the distribut...

Hereditary breast cancer shows a distinctive natural history characterised by an earlier age of onset, excess bilaterality, vertical transmission, heterogeneous tumour associations, and improved survival when compared to its sporadic counterpart. To date, very little attention has been given to interrelationships between breast cancer risk factors and genetics. In the general population, early ...

AIMS To measure the degree and direction of errors in recall of age at first sex. METHOD Participants were initially recruited in 1994-1995 (Wave I) with 3 subsequent follow-ups in: 1996 (Wave II); 2001- 2002 (Wave III); and 2007-2008 (Wave IV). Participants' individual errors in recall of their age at first sex at Wave IV were estimated by the paired difference between responses given for ag...