Iranian Journal of Pediatrics
Tehran University of Medical Sciences Press
Vol. 22, No. 3, 2012, pp. 392-398
Bioline Code: pe12070
Full paper language: English
Document type: Research Article
Document available free of charge
Iranian Journal of Pediatrics, Vol. 22, No. 3, 2012, pp. 392-398
© Copyright 2012 - Iranian Journal of Pediatrics
Pubertal Characteristics in Girls of Qazvin Province, Iran|
Saffari, Fatemeh; Rostamian, Maryam; Esmailzadehha, Neda; Shariatinejad, Keivan & Karimzadeh, Toktam
Objective: Puberty is a critical time between childhood and adulthood. Many studies have reported that the
mean age of breast development is decreasing. The aim of this study was to provide updated data on the
pubertal development of girls and to evaluate precocious puberty in our population.
Methods: This cross sectional study was conducted in 6 to 16 year old school girls during 2009-2010 in
Qazvin. 2240 healthy girls from all geographical regions with every socioeconomic status were selected by a
stratified multistage cluster design to obtain representative sample of population. A questionnaire including
demographic data, anthropometric measurements, secondary sexual characteristics, menarche status and its
onset was filled out for every participant. Secondary sexual characteristics including breast development
(B1–5) and pubic hair (PH1–5) were evaluated according to Marshal and Tanner recommendation.
Findings: The mean±SD of height, weight, and BMI of participants was 139.7±14.5, 36.1±12.9 and 17.9±3.7
respectively. The mean age (10th – 90th percentile) of B2 and PH2 were 9.71(7.67–11.4) and 9.82 years (7.84–
11.42) respectively. Mean age of menstruation was 12.52 years. The mean BMI was significantly higher in
pubertal females comparing to prepubertal girls (P<0.001). Average duration of puberty (the time from
initiation of puberty to menarche) was 2.81 years.
Conclusion: The mean age of pubertal onset in girls living in Qazvin is 9.71 years. Menarche occurs at mean
age of 12.52 and onset of puberty earlier than 6.24 years will be precocious. We found that girls in Qazvin had
a slightly earlier age of initiation of puberty and of menarche in comparison with other studies in Iran.
Puberty Onset; Breast Development; Pubic Hair; Menstruation; Girls
Alternative site location: http://diglib.tums.ac.ir/pub/