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. 2012 Apr;129(4):769–778. doi: 10.1542/peds.2011-0719

TABLE 1.

Demographics and Auxologic Measurements (Mean ± SD)

XXY XYY Controls P valuea
n 82 26 50
Age 9.2 ± 2.5 9.5 ± 2.8 9.5 ± 2.9 .87
SES 50 ± 11b 52 ± 10 54 ± 9 .05
Height SDS 0.8 ± 1.1 1.0 ± 1.2 0.1 ± 0.9 .0001a
Weight SDS 0.6 ± 1.2 0.7 ± 1.2 0.5 ± 1.1 .57
Head circumference SDS 0.3 ± 1.5b 1.2 ± 2.1c 0.9 ± 1.4 .03
Tanner stage-pubic hair 1.4 ± 0.8 1.4 ± 1.1 1.3 ± 0.8 .91
Testicular volume SDS (mean of 2) −1.0 ± 1.6b 2.8 ± 4.1c 1.1 ± 2.5 .0001a
Race (% Caucasian) 81% 88% 78% .53
General conceptual ability standard score 88 ± 14b 91 ± 17d 110 ± 16 < .0001a
a

ANOVA, comparison of 3 groups.

b

P < .05, XXY versus controls, ANOVA (post hoc).

c

P < .05, XYY versus XXY, ANOVA (post hoc).

d

P < .05, XYY versus controls, ANOVA (post hoc).

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