Birthweight, childhood body size, and timing of puberty and risks of breast cancer by menopausal status and tumor receptor subtypes

Table 1 Characteristics of early life body size and pubertal timing for 162,419 girls from the Copenhagen School Health Records Register

Characteristic	N	Median	5th	95th
Birthweight (g)	125,352	3300	2500	4200
BMI (kg/m²)
7 years	151,335	15.3	13.5	18.2
13 years	135,355	18.4	15.3	23.5
Height (cm)
7 years	151,335	121.9	113.3	130.7
13 years	135,355	155.8	143.2	167.4
Puberty markers (years)
Age at OGS	70,538	10.2	7.9	12.2
Age at PHV	70,538	11.8	9.6	13.6

BMI body mass index, OGS onset of the growth spurt, PHV peak height velocity

ISSN: 1465-542X