TABLE 1.

Child demographic information.

	ASD group	TD group
	Mean (SD)	Mean (SD)
	range	range
Chronological age (months)	43.5 (12.86)	46 (14.45)
	26–71	25–67
PLS-5 AC standard score	63.71 (16.37)	116.71 (8.54)
	50–98	106–130
PLS-5 AC percentile	6.79 (12.56)	83.5 (11.97)
	1–45	66–98
PLS-5 AC age equivalent (in months)	23.57 (14.97)	58.21 (20.99)
	13–60	31–95
PLS-5 EC standard score	70.43 (13.02)	118.79 (16.15)
	50–93	96–148
PLS-5 EC percentile	6.85 (9.50)	80.21 (20.95)
	1–32	39–99
PLS-5 EC age equivalent (in months)	24.43 (13.09)	58.07 (19.20)
	9–59	33–95
Mullen VR T-score	27.71 (9.13)	61.86 (10.63)
	20–46	42–80
Mullen VR age equivalent (in months)	29.00 (15.42)	53.29 (12.54)
	14–66	27–69
ADOS-2 severity score	8.71 (1.33)	–
	6–10

ASD, autism spectrum disorder; TD, typical development.

Groups differed significantly at p < 0.001 on all variables except chronological age (p = 0.633). PLS-5, pre-school language scale, 5th Edition; AC, auditory comprehension scale; EC, expressive communication scale; PLS-5, standard scores have a mean of 100 and SD of 15. Mullen VR = mullen scales of early learning, visual reception scale. Mullen t-scores have a mean of 50 and SD of 10. ADOS-2 severity scores = autism diagnostic observation schedule, 2nd Edition, calibrated severity score. Calibrated severity scores range from 1 to 10, with 1–2 indicating minimal-to-no evidence of autism spectrum-related symptoms, 3–4 indicating low evidence, 5–7 indicating moderate evidence, and 8–10 indicating a high level of autism spectrum-related symptoms.