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Table 2 Standardized measures (mean, SD) of child behavior checklist (CBCL)

From: DNA methylation and behavioral dysfunction in males with 47,XXY and 49,XXXXY: a pilot study

Test

Mean 47,XXY (SD)

Mean 49,XXXXY (SD)

Significance

Cohen's d

CBCL Internalizing Problems (T)

55.7 (13.1)

66.2 (10.4)

0.034

0.89

CBCL Externalizing Problems (T)

53.92 (9.6)

64.7 (8.6)

0.006

1.18

CBCL Total Problems (T)

58.9 (11.8)

68.8 (8.2)

0.020

0.97

  1. T = T-score; SD = standard deviation; mean scores for the 49,XXXXY group were all significantly different from the test value T = 50 (P < 0.001)