Update on pubertal development among primary school students in Shanghai, 2014
10.3760/cma.j.issn.0253-9624.2016.11.010
- VernacularTitle:2014年上海市小学生青春期性征发育状况调查
- Author:
Yao CHEN
1
;
Yunting ZHANG
;
Chang CHEN
;
Yanrui JIANG
;
Yuanjin SONG
;
Shijian LIU
;
Fan JIANG
Author Information
1. 200127,上海交通大学医学院附属上海儿童医学中心内分泌与遗传代谢疾病科教育部和上海市环境与儿童健康重点实验室
- Keywords:
Sexual development;
Adolescent development;
Cross-sectional studies
- From:
Chinese Journal of Preventive Medicine
2016;50(11):971-975
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the current prevalence of pubertal development in healthy Shanghai schoolchildren.Methods This study was a cross-sectional investigation focused on current pubertal development conducted in healthy Shanghai schoolchildren by multi-stage cluster sampling.The sample included 17 571 children in grades 1-5 investigated in June 2014.The data were weighted by inverse probability weighting (IPW) to make them more representative.At examination,stages of breast and pubic hair development were rated according to the Tanner method.Testicular volume was determined.Data on menarche and spermatorrhea were collected by the status quo method.The rates of precocious puberty,breast,and pubic hair development of Tanner stage ≥ Ⅱ in girls aged 6-7 years,menarche in girls aged 6-9 years,and testicular volume ≥4 ml and pubic hair development of Tanner stage ≥ Ⅱ in boys aged 6-8 years were calculated.All the data were weighted by IPW.Results After data processing,16 197 children's data were analyzed.In girls aged 6-7 years,17.2％ and 2.5％ showed evidence of breast and pubic hair development at Tanner stage ≥ Ⅱ,respectively.In girls aged 6-9 years,0.3％ had experienced menarche.Schoolgirls' rate of menarche was 4.7％.In girls aged 6-7 years,19.0％ were diagnosed with precocious puberty according to the classic criteria.In boys aged 6-8 years,1.7％ had testicular volume ≥4 ml,and 0.6％ showed evidence of pubic hair development at Tanner stage ≥ Ⅱ.Schoolboys' incidence rate of spermatorrhea was 0.1％.In boys aged 6-8 years,2.3％ were diagnosed with precocious puberty according to the classic criteria.All the numbers above were weighted.Conclusion Proper education on adolescence and sex is essential for Shanghai schoolchildren.
