Epidemiological survey on pubertal developmental characteristics of primary school students in Yangzhou City

DOU Chengyin; ZHANG Lei; GE Baojin; WANG Lei

doi:10.16835/j.cnki.1000-9817.2025180

Volume 46 Issue 7

Jul. 2025

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Article Navigation > CHINESE JOURNAL OF SCHOOL HEALTH > 2025 > 46(7): 1019-1022

DOU Chengyin, ZHANG Lei, GE Baojin, WANG Lei. Epidemiological survey on pubertal developmental characteristics of primary school students in Yangzhou City[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2025, 46(7): 1019-1022. doi: 10.16835/j.cnki.1000-9817.2025180

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DOU Chengyin, ZHANG Lei, GE Baojin, WANG Lei. Epidemiological survey on pubertal developmental characteristics of primary school students in Yangzhou City[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2025, 46(7): 1019-1022. doi: 10.16835/j.cnki.1000-9817.2025180

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Epidemiological survey on pubertal developmental characteristics of primary school students in Yangzhou City

doi: 10.16835/j.cnki.1000-9817.2025180

Child Healthcare Department of Yangzhou Maternal and Child Health Care Hospital Affiliated to Yangzhou University, Yangzhou 225002, Jiangsu Province, China

Received Date: 2024-12-25
Rev Recd Date: 2025-05-06

Available Online: 2025-08-02

Publish Date: 2025-07-25

Abstract

Abstract

Objective To investigate the timing of puberty onset among primary school students, so as to provide the reference data for early identification of children with suspected precocious puberty. Methods A study was conducted from October 23 to November 7, 2023, involving 10 225 students(5 412 boys, 4 813 girls) from grade 1 to 6 of four campuses in Meiling Primary School in Yangzhou. Breast development in girls and external genitalia in boys was assessed via visual inspection and palpation, with pubertal stages classified using the Tanner staging method. Puberty onset timing was determined based on age/sex reference values from Chinese Han children's pubertal milestone indicators. Descriptive analysis was performed using SPSS 26.0. Results The median age for testicular volume reaching 4 mL in boys was 10.49 years, while the median age for breast development onset in girls was 9.70 years. Among boys with testicular volume ≥4 mL, 16.6%(n=217) were identified as suspected early puberty cases; among girls with Tanner stage Ⅱ and Ⅲ, 123(9.4%) and 165(18.5%) showed earlier breast development than the reference range. Overall, 14.4% of students exhibited suspected precocious puberty. Conclusion The onset age of puberty for girls in primary schools of Yangzhou aligns with findings from other regions, while boys show earlier pubertal initiation.
- Adolescent development,
- Tanner staging,
- Growth and development,
- Child

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References(32)

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