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. Author manuscript; available in PMC: 2019 Sep 5.
Published in final edited form as: J Pediatr. 2007 Dec 21;152(5):716–722. doi: 10.1016/j.jpeds.2007.10.019

Table I.

Mean values (± SD) for auxologic and testicular measurements in boys with Klinefelter syndrome divided by age group

Age 2.0–9.9 years Age 10.0–14.9 years P value All
N 37 18 55
Height SDS 0.8 ± 1.3 1.0 ± 1.2 .54 0.9 ± 1.3
Weight SDS 0.7 ± 1.4 0.6 ± 1.3 .57 0.7 ± 1.4
Height SDS adjusted for midparental height SDS* 0.7 ± 1.4 0.8 ± 1.3 .68 0.7 ± 1.3
BMI (kg/m2) 18 ± 3 20 ± 5 .07 18 ± 4
BMI SDS 0.5 ± 1.3 0.1 ± 1.4 .25 0.4 ± 1.4
Head Circumference SDS 0.3 ± 1.7 1.0 ± 2.0 .18 0.5 ± 1.8
Upper segment/lower segment SDS 1.3 ± 3.4 0.1 ± 3.0 .22 0.8 ± 3.2
Testicular volume (ml) 1.2 ± 0.4 2.6 ± 1.3 <.01 1.7 ± 1.1
Testicular volume SDS −1.2 ± 1.2 −0.4 ± 1.6 .04 −0.9 ± 1.4
Penile length (cm) 4.0 ± 0.7 5.1 ± 2.2 .01 4.4 ± 1.7
Penile length SDS −1.7 ± 0.6 −1.4 ± 0.9 .19 −1.6 ± 0.8

P value younger versus older group.

*

If the height SDS adjusted for midparental height SDS = 0, then the child’s height = the midparental height for age.