Age of puberty in Iranian girls living in Tehran.
The aim of this study was to determine the age of appearance of secondary sexual characteristics in Iranian girls living in Tehran. A cross-sectional study was conducted between 2003 and 2004 on 1420 6-17-year-old females in different parts of Tehran. Data were collected on the basis of a multistage probability sampling. Secondary sexual characteristics were evaluated by inspection and palpation, and were recorded according to Tanner staging. The subjects were asked about the occurrence of menarche and the age of its onset. Generalized additive logistic modelling was used for the analysis of data. The median age (percentile 10-percentile 90) of Tanner 2 of breast development (B2) and Tanner 2 of pubic hair growth (P2) among 1136 girls was 9.74 years (8.23-11.94) and 10.49 years (8.86-12.17), respectively. The ages of the 2.5 percentile for B2 and P2 were 7.42 and 7.03 years, respectively, so the onset of puberty at < 7 years and 5 months is considered precocious in this population. The median age of menarche in 399 girls was 12.68 years (11.27-15.96).
Razzaghy-Azar
Maryam
M
H. Aliasgar Hospital, Iran University of Medical Sciences, Tehran, Iran. mrazar_md@yahoo.com
Moghimi
Ali
A
Sadigh
Nader
N
Montazer
Mehdi
M
Golnari
Pedram
P
Zahedi-Shoolami
Leila
L
Van Buuren
Stef
S
Mohammad-Sadeghi
Homa
H
Zangeneh-Kazemi
Azadeh
A
Fereshtehnejad
Seyed-Mohammad
SM
D000293:Adolescent; D041923:Adolescent Development; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007492:Iran; D011627:Puberty