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Table 1 Sample characteristics

From: Teasing apart the heterogeneity of autism: Same behavior, different brains in toddlers with fragile X syndrome and autism

Group

N a

Site (SU/UNC)

Age (years) M (SD)

IQ Estimateb M (SD)

Adaptive Behc M (SD)

Fragile X Syndrome

52

(28/24)

2.9 (0.6)

54.9 (9.1)

62.3 (9.8)

Autism

63

(17/46)

2.8 (0.4)

54.1 (9.4)

62.3 (8.3)

Developmental Delay

19

(11/8)

2.96 (0.5)

55.8 (7.6)

64.8 (11.7)

Typically Developing

31

(11/20)

2.6 (0.6)

109.6 (17.2)

97.2 (12.7)

  1. aAll subjects were males
  2. bIQ Estimate from Mullen Composite Standard Score
  3. cAdaptive behavior estimate from Vineland Adaptive Behavior Composite