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Table 3 Percentage scoring above the ASD and autism cutoffs on the SCQ

From: Prospective study of autism phenomenology and the behavioural phenotype of Phelan–McDermid syndrome: comparison to fragile X syndrome, Down syndrome and idiopathic autism spectrum disorder

Group

% scoring above ASD cutoff

(N)

% scoring above autism cutoff

(N)

PMS

86.7

(26)

56.7

(17)

FraX

80.0

(24)

51.9

(14)

DS

23.3

(7)

22.2

(6)

Idiopathic ASD

100.0

(30)

76.7

(23)