Time distributions between selected events for women in Japan are examined, including birth, encounter with eventual husband, marriage, and first pregnancy. The author considers attitude toward marriage and its impact on timing of events. A model is developed to project marriage age and age at first pregnancy. Data are from the 1987 National Fertility Survey. (SUMMARY IN ENG)

The timing of marriages, first birth interval and the prevalence of premarital conception (PMC) among women of successive birth cohorts in one rural county in Yunnan, China, were examined. Detailed pregnancy histories were collected for 1,336 women aged 15-64 years using a Life History Calendar. The rising marriage age and shorter first birth interval correspond to over-all changes in the Chine...

conclusions sexual activity in last week of pregnancy might be associated with the onset of labor. therefore, in the absence of complications in term pregnancy, sexual activity can be considered as a natural way to prevent post term pregnancy. background pregnancy is one of the most critical periods in women's lives. sexual relationships change in this period. monitoring of uterine contractions...

abstract background and purpose:women’s health, as almost “half of the population of each society” and in recent years as “half of the workforce,” is of particular importance in achieving sustainable development goals. the aim of this study is to investigate the relationship between birth weight and gestational age and mother’s employment. materials and methods:this descriptive analytic study w...

This study confirmed the hypothesis that pregnant teenagers in the 1990s are more likely to have a mother who had a teenage pregnancy than non-pregnant teenagers. It also found that the daughters of teenage mothers are more likely to continue their own pregnancies.

Background Today, many of women postpone their birth of the first baby until fourth or fifth decade. This study was to evaluate the pregnancy outcomes in women aged 40 years and older in pregnant women referred to Ayatolah Rohani Hospital in Babol. MaterialsAndMethods This case-control study was conducted of 160 patients in two groups, ≥ 40 age group and age group

background: women 35-39 years old have a 2–3 fold higher risk of pregnancy-related death than women in their twenties and the risk is even more dramatic for women 40 years and older. objective: the aim of this study was to investigate the association of maternal age with risk of adverse pregnancy and mother outcomes in our setting tehran iran. materials and methods: in this retrospective observ...

background: female age and basal fsh level are independently associated with ivf outcome. they are both related to the same phenomenon, namely ovarian reserve. objective: to evaluate the effective role of serum fsh concentration at the start of treatment cycle on art outcome. materials and methods: a total of 207 women undergoing ivf and icsi cycles were included in this study. basal fsh concen...