نتایج جستجو برای: menarcheal age
تعداد نتایج: 755669 فیلتر نتایج به سال:
Menarcheal age is a key indicator of female maturity and development. Studies in many countries have reported a downward secular trend in age of menarche over the past century. This study presents data gained using the 'status quo' method and interval regression to estimate median menarcheal age of girls in a rural Gambian community. Cross-sectional studies carried out in 1989, 2000 and 2008 re...
BACKGROUND Various observational studies have focused on the relationship between menarcheal age and the risk of colorectal cancer (CRC). However, the association is still controversial because of inconsistent results. Therefore, we performed a meta-analysis to assess this issue from epidemiological studies. METHODS After a literature search in MEDLINE, EMBASE, and Web of Science for studies ...
Although there is knowledge about earlier mean age at menopause among left-handed postmenopausal women, it is unclear from the literature whether age of menarche is influenced by the prenatal hormonal pattern and cerebral lateralization. We therefore planned to investigate the relation between age of menarche and cerebral lateralization in girls at an altitude of nearly 2000 m. Sixty-two girls,...
Reproductive factors have been linked to both breast cancer and DNA methylation, suggesting methylation as an important mechanism by which reproductive factors impact on disease risk. However, few studies have investigated the link between reproductive factors and DNA methylation in humans. Genome-wide methylation in peripheral blood lymphocytes of 376 healthy women from the prospective EPIC st...
In the present study the menarcheal status (pre-or postmenarcheal), body composition, weight status, and socioeconomic parameters such as type of school and parental educational level as of 1752 female adolescents ageing between 12 and 18 years (x = 14.6) from rural areas of Eastern Austria were documented. Furthermore the association patterns between body composition, socioeconomic parameters ...
The subjects of the study were 418 highly successful female athletes and 512 female non-athletes drawn from all over Nigeria. Recall procedures were used to ascertain the age at menarche. The study gave the following results: In general, over-all mean menarcheal age of athletes (14.13 years) was significantly higher (p less than .05) than that of non-athletes (13.57 years). Menarche was signifi...
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