A Secular Trend in Age at Menarche in Japan

Age at menarche and secular trend in Maharashtrian (Indian) girls

Age at menarche of 366 Maharashtrian Brahmin, Maratha and Scheduled Caste girls was studied and two hypotheses relating menarcheal age to physical growth were compared. Results indicated that both measurements, the height (the indicator of skeletal maturity), and the weight (the indicator of fat accumulation), were positively correlated with age at menarche. The well known phenomena of children...

Evidence for a secular trend in age of menarche.

Age at menarche and the evidence for a positive secular trend in urban South Africa.

Menarcheal age was estimated for 287 (188 Black; 99 White) urban South African girls born in Soweto-Johannesburg in 1990. The median menarcheal age for Blacks was 12.4 years (95% confidence interval (CI) 12.2, 12.6) and 12.5 years (95% CI 11.7, 13.3) for Whites. Data from six studies of menarcheal age, including the current study, were analyzed to examine the evidence for a secular trend betwee...

Secular 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...

Evidence for a downward secular trend in age of menarche in a rural Gambian population

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...