Abbreviations: CI, confidence interval; Tanner B2-5, Tanner Breast stage 2-5; Tanner G2-5, Tanner Genital stage 2-5; Tanner PH2-5, Tanner Pubic Hair stage 2-5. from publication: Alcohol...

The Tanner scale, also known as the sexual maturity rating (SMR) is an objective classification scale used to document and track the development of secondary sexual characteristics during puberty. From: Best Practice & Research Clinical Obstetrics & Gynaecology, 2023

We estimated mean age at attaining the following pubertal milestones in years with 95% confidence intervals (CI): age at menarche, voice break, first ejaculation of semen and Tanner stages for pubic hair development and breast development or genital development.

Aug 12, 2020 · I n 1962, James Tanner published a Sexual Maturity Rating system that is still in use today. The scale ranges from prepubertal (stage I) to adult (stage V). For girls, the stages of puberty are based on breast size (B) and shape, and pubic hair (P) development and distribution.

Mar 6, 2020 · The Tanner breast (Tanner B) scale ranges from B1 (prepubertal) to B5 (mature), in which stage B2 marks the first appearance of glandular breast tissue (thelarche) and thus the start of central puberty.

其实，这源于 英国儿科医生Tanner 制定的5期分类性发育水平评价法，评估指标包括女孩乳房变化、男孩外生殖器变化、男女阴毛变化，由不成熟到成熟依次分为五个等级，也叫 Tanner 分期。 Ⅰ期：青春期前，睾丸、阴囊和阴茎的大小与比例同幼童期类似。 Ⅱ期：阴囊和睾丸增大，阴囊皮肤出现纹理，开始变红，阴茎无变化或变化很小。 Ⅲ期：阴茎开始生长，起初主要是变长，周径也有所增大，睾丸和阴囊进一步发育。 Ⅳ期：阴茎继续增大，阴茎头开始发育，睾丸和阴囊进 …

When accounting for interaction between maternal pregravid BMI and GDM, there was a 3-fold increased hazard of Tanner stage ≥PH2 among girls born to mothers with GDM and a pregravid BMI ≥25 compared to mothers without GDM and a pregravid BMI <25 (adjusted HR: 2.97 (95% CI: …

Jan 1, 2018 · The Tanner assessment of pubertal development is used to give a standardised way of refering to pubertal staging. For each sex there are three scores; 0 is prepubertal and 5 is postpubertal. Scoring is based on: breast development in girls, genital development in boys; pubic hair development; axillary hair development

Tanner Stage 1 is used to define prepubertal status, while Tanner Stage 2 indicates the initial production of gonadal hormones and the onset of puberty. Pubertal progression continues as more sex hormones are produced, and Tanner Stage ratings of 3 and 4 are used to describe the further development of secondary sex characteristics over time.

Jan 14, 2025 · The stages of development during puberty are classified according to the Tanner stages. Although there is considerable variation between individuals, puberty begins on average at the age of 11 in girls and 13 in boys.