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. Author manuscript; available in PMC: 2015 Apr 3.
Published in final edited form as: J Autism Dev Disord. 2012 Nov;42(11):2312–2322. doi: 10.1007/s10803-012-1478-z

Table 1.

Baseline clinical characteristics of participants with autism and typically developing controls.

Autism
M (SD)		 Healthy Controls
M (SD)		 t/χ2 (p)
N 23 23
Age at Time 1 (range) 10.59 (8–12) 10.55 (7–13) 0.09 (.928)
Age at Time 2 (range) 13.14 (9–15) 12.45 (9–16) 1.34 (.189)
Δ in age: (years) 2.35 (0.73) 1.91 (0.98) −1.48 (.149)
SES 4.52 (0.59) 4.39 (0.58) −0.75 (.456)
Handedness (% Right) 73.91% 95.65% 4.21 (.040)
FSIQ 94.61 (20.02) 116.17 (13.20) 4.31 (<.001)
VIQ 93.52 (17.65) 112.65 (14.70) 4.00 (<.001)
PIQ 96.48 (21.78) 116.48 (12.99) 3.78 (.001)
ADI-R Total 51.35 (7.45)
ADOS Total 15.52 (3.01)

Note. SES=Socioeconomic status, FSIQ=full scale intelligence quotient, VIQ=Verbal intelligence quotient, PIQ=Performance intelligence quotient. DF=44, except Δ Time 2-Time 1 DF=35 and Age at Time 2 DF=38. Δ in age = Change in age between follow-up and baseline in years.