Evidence for a secular trend in age of menarche.
نویسندگان
چکیده
منابع مشابه
Secular Trends in Menarcheal Age in India-Evidence from the Indian Human Development Survey
BACKGROUND Evidence from a number of countries in Europe and North America point towards the secular declining trend in menarcheal age with considerable spatial variations over the past two centuries. Similar trends were reported in several developing countries from Asia, Africa and Latin America. However, data corroborating any secular trend in the menarcheal age of the Indian population remai...
متن کاملThe relationship between malocclusion and menarcheal age, and its secular trend for Korean women
OBJECTIVE This study aimed to evaluate the mean age of menarche, its secular trend in Korean women, and the relationship between malocclusion and the rate of skeletal maturation, as defined by menarcheal age. METHODS We retrospectively collected data on menarcheal age from 931 Korean women born during 1961 - 1997. Subjects were divided by the malocclusion type and birth-year decade into 3 and...
متن کاملSystematic Review on Secular Trends and Determinants of Age at Menarche
Department of Science, Ayesha Sadeeqa Post Graduates Girls College, Rajanpur; Pakistan E-mail: [email protected] [email protected] Tel.: +92 3330683844 Adolescent girls when face bleeding from vagina for the first time; is known as menarche that influence lateral life. This review summarizes the findings of important associated environmental factors and reasons in determining the secular tr...
متن کاملA Secular Trend toward Earlier Male Sexual Maturity: Evidence from Shifting Ages of Male Young Adult Mortality
This paper shows new evidence of a steady long-term decline in age of male sexual maturity since at least the mid-eighteenth century. A method for measuring the timing of male maturity is developed based on the age at which male young adult mortality accelerates. The method is applied to mortality data from Sweden, Denmark, Norway, the United Kingdom, and Italy. The secular trend toward earlier...
متن کاملSecular trend in stature and age at menarche among Punjabi Aroras residing in New Delhi, India.
The study was conducted on Punjabi Arora girls (n = 159) and their mothers to see the phenomenon of secular trend in stature and age at menarche. An increase in stature and decrease in age at menarche was reported when the data of daughters was compared with that of their mothers thereby indicating secular trend in these two parameters. Better living conditions, improved nutrition and medical f...
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ورودعنوان ژورنال:
- The New England journal of medicine
دوره 306 17 شماره
صفحات -
تاریخ انتشار 1982