OBJECTIVE To determine how early puberty and peer deviance relate to trajectories of aggressive and delinquent behavior in early adolescence and whether these relationships differ by race/ethnicity. METHODS In this longitudinal study, 2607 girls from 3 metropolitan areas and their parents were interviewed at ages 11, 13, and 16 years. Girls reported on their age of onset of menarche, best fri...

The term menarche signifying the onset of menstruation is merely one manifestation of puberty. The age at menarche has been getting earlier all over the world with varying rates. An average decline of about 4 months per decade has been reported from the United States and in Western Europe over the period 1830-1960, while that in Eastern Europe since the late nineteenth century. There have been ...

The authors compared the frequency of epilepsy onset in perimenarche with epilepsy onset in other childhood periods in 94 postmenarchial patients aged <55 years. Seizure onset was higher for the 12 to 15 year age bracket than for other ages and clustered around menarche. Epilepsy began during the year of menarche in 17% of patients vs 5.5% expected (p < 0.001), and during +/-2 years of menarche...

BACKGROUND The observed age of menarche has fallen, which may have important adverse social and health consequences. Increased exposure to endocrine-disrupting compounds (EDCs) has been associated with adverse reproductive outcomes. OBJECTIVE Our objective was to assess the relationship between EDC exposure and the age of menarche in adolescent girls. METHODS We used data from female partic...

The paper attempts to clarify the reasons for sooner pubescence of girls with sight defects than that of their normally seeing peers. The age of menarche was considered depending on the degree of the sight impairment and the disease etiology as well as some selected factors of the socio-economic environment in the examined girls’ families.

Measurements of maturity depend on the biological system considered since differences are often found in performance and body size in subjects of the same chronological age. The objective of this study was to identify associations between biological maturation, body morphology and physical performance in girls aged from 8.0 to 15.9 year-old and to verify the bone age in obese girls and compare ...

C lassically, the normal chronological age for pubertal onset is between 8 and 13 years in girls and 9 and 14 years in boys based on data from epidemiological studies from the 60’s (1). However, the age limit for pubertal timing is still a challenge (2,3). It is well known that puberty is a complex and multi factorial process that involves genetic, metabolic, socio economic, nutritional and eth...

OBJECTIVE We estimated pubertal development of 7,493 normal Iranian girls aged 6 to 20 years in a cross-sectional study. METHODS Pubertal stages were assessed according to Tanner. The mean ages to achieve secondary sexual characteristics as well as the mean age at menarche were estimated. Weight and height were measured and body mass index (BMI) was calculated. Reference curves for different ...

OBJECTIVE To ascertain the prevalence of menstrual problems in adolescent girls and their health-seeking behaviour. DESIGN Questionnaire survey on menstruation, menstrual problems, medical consultation, and factors influencing girls seeking medical care. SETTING Secondary schools in the catchment area of a tertiary teaching hospital in Hong Kong. PARTICIPANTS A total of 5609 girls from 10...

The present investigation was aimed at studying the awareness levels of menstruation and related aspects among adolescent girls. The study was conducted in Rongram block of West Garo Hills district of Meghalaya with 100 adolescent school going girls in the age group of 13 to 18 years. The respondents were selected randomly from secondary schools of five villages. A pre-tested and modified self-...