. Author manuscript; available in PMC: 2009 Nov 4.

Published in final edited form as: Ann Neurol. 2008 Jan;63(1):40–51. doi: 10.1002/ana.21243

Table 1.

Clinical Characteristics of Study Subjects: Age, Sex, and Intelligence Quotient in Fragile X Syndrome Compared with Control Subjects

Characteristics	Fragile X (n = 84)	Control Subjects (n = 72)	Statistics (df = 1, 154)
Age, yr^a	11.7 (5.7) 1.1–22.7	11.7 (4.6) 1.8–22.7	T = -0.3 p = 0.98
Sex, M/F	45/39	43/29	χ² = 0.6 p = 0.44
Full-scale IQ^a	69.7 (20.8) 40–116	119.0 (11.2) 92–142	t = -16.8 p < 0.0001
Verbal IQ^a	74.5 (20.9) 46–115	119.0 (11.2) 97–141	t = -12.8 p < 0.0001
Performance IQ^a	73.8 (20.4) 46–123	113.5 (14.7) 84–149	t = -11.0 p < 0.0001

df = degrees of freedom; IQ = intelligence quotient.

mean (standard deviation) range.