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Table 3 Distribution data for each battery measure in the group with Down syndrome

From: Development and validation of the Arizona Cognitive Test Battery for Down syndrome

Measure na % not completed % floor Mean SD Range Skewness Kurtosis
Background and benchmark
 SIB-R adaptive behavior standard score 70 5.4 10.0 36.50 25.28 2–89 0.18 −0.89
 KBIT-II verbal score 70 5.4 0.0 22.53 11.95 2–59 0.66 0.73
 KBIT-II non-verbal score 70 5.4 5.7 11.89 5.64 0–27 −0.23 0.24
 CANTAB spatial span span 66 10.8 33.3 2.30 1.27 1–6 0.67 −0.08
Hippocampal
 CANTAB PAL first trials correct 71 4.1 14.1 7.42 6.01 0–22 0.42 −0.80
 Computer generated arena % time in the target quadrant 63 14.9 22.2 24.05 20.22 0–77 0.54 −0.26
Prefrontal
 CANTAB ID/ED errors per stage (ln transformed) 67 9.5 14.9 5.45 3.99 1.33–26 −0.85 0.27
 Modified dots task inhib. control phase percent correct 65 8.5 29.2 63.59 31.85 0–100 −0.41 −.92
 Modified dots task combined phase percent correct 65 8.5 41.5 54.13 18.30 15–100 1.08 1.15
Cerebellar
 CANTAB simple RT median corr. latency (ms) 66 10.8 25.8 735.26 321.39 275–1,656 0.79 0.10
 NEPSY visuomotor Precision total score 48 9.4 0.0 15.24 4.57 3–21 −0.73 0.10
 Finger sequencing mean correct sequencesb (all trials) 11 9.1 18.0 230.56 51.70 144–321 0.30 0.67
  1. an varies based on the introduction of the measure, total original n = 74, bbased on the computerized version of the task