Table 4. Autism Symptoms for Phelan-McDermid Syndrome participants as assessed by the Autism Symptoms Questionnaire for Phelan-McDermid Syndrome participants with and without electron transport chain complex abnormalities.

	Overall(n = 31)	No ComplexAbnormalities(n = 13)	ComplexAbnormalities(n = 18)
Autism Spectrum Disorder	61% (19/31)	69% (13/31)	56% (18/31)
Social Subscale Score	2.5 (1.3)	2.1 (1.3)	2.8 (1.3)
Communication Subscale Score	3.9 (0.7)	3.5 (0.8)	4.1 (0.6)
Stereotyped Behavior Subscale Score	2.3 (1.3)	2.4 (1.3)	2.2 (1.4)
Total Score	8.7 (2.2)	8.0 (2.1)	9.1 (2.3)

Scores from the individual subscales and the total score are also presented.