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Table 2 Characteristics of the boys with early puberty at presentation

From: Familial early puberty: presentation and inheritance pattern in 139 families

  PP (n = 25) AP (n = 13) Total (n = 38)
n m ± SD n m ± SD n m ± SD
Age at onset, years 25 8.8 ± 0.6 12 10.7 ± 0.5 37 9.5 ± 1.1
Age at evaluation, years 25 9.8 ± 1 13 11.4 ± 1.3 38 10.3 ± 1.3
Height, SDS 25 2.2 ± 1.6 12 0.1 ± 1.3 37 1.6 ± 1.8
BMI, SDS 24 1.2 ± 1 12 0.2 ± 1 36 0.9 ± 1.1
BA advance, years 24 1.4 ± 1.2 10 0.3 ± 1.1 34 1.1 ± 1.3
Tanner pubic hair 24 3 ± 1 11 2.8 ± 1.2 35 3 ± 1
Testicular volume, mm 21 36.4 ± 9.3 10 39.8 ± 7 31 38 ± 8.6
Age at M mothers, years 23 11.3 ± 1.5 13 11.4 ± 1.5 36 11.4 ± 1.5
LH peak, IU/L 22 14.7 ± 10.5 10 15.9 ± 5.2 32 15.1 ± 9.1
FSH peak, IU/L 22 5.4 ± 5.3 10 4.8 ± 5.6 32 5.2 ± 5.3
LH/FSH peak ratio 22 3.4 ± 2.7 10 6.1 ± 4.4 32 4.2 ± 3.5
Testosterone, ng/mL 25 1.8 ± 2.7 12 1.1 ± 1.1 37 1.6 ± 2.3
GnRH analog treatment 25 2 13 2 38 4 (10 %)
  1. PP Central precocious puberty, AP Advanced puberty, M menstruation