Pubertal Pathways in Girls Enrolled in a Contemporary British Cohort
Table 1
Median age at Entry into tanner stage 2 of breast and pubic hair development and at menarche, overall and by initiation pathway.
Breast
Pubic Hair
Menarche
Group
Age (95% CI)
Quartiles
Age (95% CI)
Quartiles
Age (95% CI)
Quartiles
All girls (3938)
10.19 (10.14, 10.24)
9.16–11.22
10.95 (10.90, 11.00)
9.99–11.91
12.87 (10.82, 12.91)
12.08–13.65
Synchronous (1631)
10.65 (10.58, 10.72)
9.81–11.49
10.65 (10.58, 10.72)
9.81–11.49
12.84 (12.78, 12.91)
12.06–13.63
Thelarche (1482)
9.43 (9.35, 9.51)
8.42–10.44
11.63 (11.57, 11.70)
10.86–12.40
12.78 (12.71, 12.85)
12.00–13.57
Pubarche (408)
11.31 (11.19, 11.44)
10.52–12.10
9.44 (9.28, 9.59)
8.42–10.46
13.13 (13.00, 13.26)
12.34–13.92
Normal distribution specified. Girls with unknown initiation pathway () were randomly allocated to the initiation pathway groups (proportionate to the distribution among girls with known pathway) and included in the survival models for age at entry into breast and pubic hair stage 2.
