Cognitive inflexibility in Japanese adolescents and adults with autism spectrum disorders

Table 1 Demographic information for subjects with autism spectrum disorders and controls

	ASD (n = 33)	Control (n = 33)	P value
Sex (male/female)	20/13	20/13	χ2 (1, n = 66) = 1.00 P = 1.00
Age (yr)	26.1 (11.5)	26.8 (9.6)	U = 459.0, Z = –1.10 P = 0.27
Age range (yr)	15-63	18-61
Education years	13.2 (2.9)	14.2 (1.9)	U = 441.0, Z = –1.35 P = 0.18
FIQ	103.0 (16.7)	103.7 (14.7)	U = 534.0, Z = –0.13 P = 0.89
PIQ	96.2 (16.1)	97.8 (15.0)	U = 495.5, Z = –0.63 P = 0.53
VIQ	107.9 (16.3)	107.7 (14.4)	U = 521.0, Z = –0.30 P = 0.76
CPT mean D’ score	3.10 (0.61)	3.38 (0.53)	U = 396.0, Z = –1.90 P = 0.057

Data are represented as the mean ± SD and P value. Differences in clinical characteristics were analyzed using the χ² test for gender and the Mann-Whitney U-test for the other variables. ASD: Autism spectrum disorders; IQ: Intelligence quotient; FIQ: Full-scale IQ; PIQ: Performance IQ; VIQ: Verbal IQ; CPT: Continuous Performance Test.