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Table 4 Study 3 descriptive information by diagnostic group

From: The NIH Toolbox Cognitive Battery for intellectual disabilities: three preliminary studies and future directions

  Total DS + ID FXS + ID IID
n 45 19 10 16
Gender (% male) 71.1 47.4 90.0 87.5
Primary caregiver education (% with at least a 4-year college degree) 65.9 68.4 50.0 73.3
  M SD M SD M SD M SD
Chronological age 15.80 5.69 15.01 6.32 16.81 5.73 16.13 5.04
Mental age equivalent (Stanford-Binet 5) 5.24 1.90 4.71 1.42 4.05 0.59 6.53 2.19
Full-scale deviation IQ score (Stanford-Binet 5; [38]) 53.04 17.14 49.76 13.51 40.29 12.92 64.90 16.44
VABS-2 adaptive behavior composite 59.20 16.73 62.58 11.21 49.80 16.82 61.20 20.82